forked from Minki/linux
75f74f0dbe
Cores provide 3 emulation hooks, implemented for example in the new
4xx_emulate.c:
kvmppc_core_emulate_op
kvmppc_core_emulate_mtspr
kvmppc_core_emulate_mfspr
Strictly speaking the last two aren't necessary, but provide for more
informative error reporting ("unknown SPR").
Long term I'd like to have instruction decoding autogenerated from tables of
opcodes, and that way we could aggregate universal, Book E, and core-specific
instructions more easily and without redundant switch statements.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2007
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __KVM_POWERPC_TLB_H__
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#define __KVM_POWERPC_TLB_H__
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#include <linux/kvm_host.h>
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#include <asm/mmu-44x.h>
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extern int kvmppc_44x_tlb_index(struct kvm_vcpu *vcpu, gva_t eaddr,
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unsigned int pid, unsigned int as);
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extern struct kvmppc_44x_tlbe *kvmppc_44x_dtlb_search(struct kvm_vcpu *vcpu,
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gva_t eaddr);
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extern struct kvmppc_44x_tlbe *kvmppc_44x_itlb_search(struct kvm_vcpu *vcpu,
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gva_t eaddr);
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extern void kvmppc_tlbe_set_modified(struct kvm_vcpu *vcpu, unsigned int i);
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extern int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb,
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u8 rc);
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extern int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws);
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/* TLB helper functions */
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static inline unsigned int get_tlb_size(const struct kvmppc_44x_tlbe *tlbe)
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{
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return (tlbe->word0 >> 4) & 0xf;
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}
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static inline gva_t get_tlb_eaddr(const struct kvmppc_44x_tlbe *tlbe)
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{
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return tlbe->word0 & 0xfffffc00;
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}
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static inline gva_t get_tlb_bytes(const struct kvmppc_44x_tlbe *tlbe)
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{
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unsigned int pgsize = get_tlb_size(tlbe);
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return 1 << 10 << (pgsize << 1);
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}
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static inline gva_t get_tlb_end(const struct kvmppc_44x_tlbe *tlbe)
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{
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return get_tlb_eaddr(tlbe) + get_tlb_bytes(tlbe) - 1;
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}
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static inline u64 get_tlb_raddr(const struct kvmppc_44x_tlbe *tlbe)
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{
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u64 word1 = tlbe->word1;
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return ((word1 & 0xf) << 32) | (word1 & 0xfffffc00);
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}
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static inline unsigned int get_tlb_tid(const struct kvmppc_44x_tlbe *tlbe)
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{
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return tlbe->tid & 0xff;
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}
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static inline unsigned int get_tlb_ts(const struct kvmppc_44x_tlbe *tlbe)
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{
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return (tlbe->word0 >> 8) & 0x1;
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}
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static inline unsigned int get_tlb_v(const struct kvmppc_44x_tlbe *tlbe)
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{
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return (tlbe->word0 >> 9) & 0x1;
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}
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static inline unsigned int get_mmucr_stid(const struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.mmucr & 0xff;
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}
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static inline unsigned int get_mmucr_sts(const struct kvm_vcpu *vcpu)
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{
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return (vcpu->arch.mmucr >> 16) & 0x1;
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}
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static inline gpa_t tlb_xlate(struct kvmppc_44x_tlbe *tlbe, gva_t eaddr)
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{
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unsigned int pgmask = get_tlb_bytes(tlbe) - 1;
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return get_tlb_raddr(tlbe) | (eaddr & pgmask);
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}
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#endif /* __KVM_POWERPC_TLB_H__ */
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