projects / deliverable / linux.git / blame
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|---|---|---|
| bbf45ba5 HB |
1 | /* |
| 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. | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 14 | * | |
| 15 | * Copyright IBM Corp. 2007 | |
| 16 | * | |
| 17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef __KVM_POWERPC_TLB_H__ | |
| 21 | #define __KVM_POWERPC_TLB_H__ | |
| 22 | ||
| 23 | #include <linux/kvm_host.h> | |
| 24 | #include <asm/mmu-44x.h> | |
| 25 | ||
| 26 | extern int kvmppc_44x_tlb_index(struct kvm_vcpu *vcpu, gva_t eaddr, | |
| 27 | unsigned int pid, unsigned int as); | |
| 7924bd41 HB |
28 | extern int kvmppc_44x_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); |
| 29 | extern int kvmppc_44x_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); | |
| bbf45ba5 | 30 | |
| 75f74f0d HB |
31 | extern int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb, |
| 32 | u8 rc); | |
| 33 | extern int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws); | |
| 34 | ||
| bbf45ba5 | 35 | /* TLB helper functions */ |
| 0f55dc48 | 36 | static inline unsigned int get_tlb_size(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
37 | { |
| 38 | return (tlbe->word0 >> 4) & 0xf; | |
| 39 | } | |
| 40 | ||
| 0f55dc48 | 41 | static inline gva_t get_tlb_eaddr(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
42 | { |
| 43 | return tlbe->word0 & 0xfffffc00; | |
| 44 | } | |
| 45 | ||
| 0f55dc48 | 46 | static inline gva_t get_tlb_bytes(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
47 | { |
| 48 | unsigned int pgsize = get_tlb_size(tlbe); | |
| 49 | return 1 << 10 << (pgsize << 1); | |
| 50 | } | |
| 51 | ||
| 0f55dc48 | 52 | static inline gva_t get_tlb_end(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
53 | { |
| 54 | return get_tlb_eaddr(tlbe) + get_tlb_bytes(tlbe) - 1; | |
| 55 | } | |
| 56 | ||
| 0f55dc48 | 57 | static inline u64 get_tlb_raddr(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
58 | { |
| 59 | u64 word1 = tlbe->word1; | |
| 60 | return ((word1 & 0xf) << 32) | (word1 & 0xfffffc00); | |
| 61 | } | |
| 62 | ||
| 0f55dc48 | 63 | static inline unsigned int get_tlb_tid(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
64 | { |
| 65 | return tlbe->tid & 0xff; | |
| 66 | } | |
| 67 | ||
| 0f55dc48 | 68 | static inline unsigned int get_tlb_ts(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
69 | { |
| 70 | return (tlbe->word0 >> 8) & 0x1; | |
| 71 | } | |
| 72 | ||
| 0f55dc48 | 73 | static inline unsigned int get_tlb_v(const struct kvmppc_44x_tlbe *tlbe) |
| bbf45ba5 HB |
74 | { |
| 75 | return (tlbe->word0 >> 9) & 0x1; | |
| 76 | } | |
| 77 | ||
| 78 | static inline unsigned int get_mmucr_stid(const struct kvm_vcpu *vcpu) | |
| 79 | { | |
| 80 | return vcpu->arch.mmucr & 0xff; | |
| 81 | } | |
| 82 | ||
| 83 | static inline unsigned int get_mmucr_sts(const struct kvm_vcpu *vcpu) | |
| 84 | { | |
| 85 | return (vcpu->arch.mmucr >> 16) & 0x1; | |
| 86 | } | |
| 87 | ||
| 0f55dc48 | 88 | static inline gpa_t tlb_xlate(struct kvmppc_44x_tlbe *tlbe, gva_t eaddr) |
| bbf45ba5 HB |
89 | { |
| 90 | unsigned int pgmask = get_tlb_bytes(tlbe) - 1; | |
| 91 | ||
| 92 | return get_tlb_raddr(tlbe) | (eaddr & pgmask); | |
| 93 | } | |
| 94 | ||
| 95 | #endif /* __KVM_POWERPC_TLB_H__ */ |