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 SUSE Linux Products GmbH 2010
17 * Authors: Alexander Graf <agraf@suse.de>
20 #ifndef __ASM_KVM_BOOK3S_64_H__
21 #define __ASM_KVM_BOOK3S_64_H__
23 #ifdef CONFIG_KVM_BOOK3S_PR
24 static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu *vcpu)
27 return &get_paca()->shadow_vcpu;
30 static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu)
36 #define SPAPR_TCE_SHIFT 12
38 #ifdef CONFIG_KVM_BOOK3S_64_HV
39 /* For now use fixed-size 16MB page table */
41 #define HPT_NPTEG (1ul << (HPT_ORDER - 7)) /* 128B per pteg */
42 #define HPT_NPTE (HPT_NPTEG << 3) /* 8 PTEs per PTEG */
43 #define HPT_HASH_MASK (HPT_NPTEG - 1)
47 * We use a lock bit in HPTE dword 0 to synchronize updates and
48 * accesses to each HPTE, and another bit to indicate non-present
51 #define HPTE_V_HVLOCK 0x40UL
53 static inline long try_lock_hpte(unsigned long *hpte, unsigned long bits)
55 unsigned long tmp, old;
57 asm volatile(" ldarx %0,0,%2\n"
65 : "=&r" (tmp), "=&r" (old)
66 : "r" (hpte), "r" (bits), "i" (HPTE_V_HVLOCK)
71 static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
72 unsigned long pte_index)
74 unsigned long rb, va_low;
76 rb = (v & ~0x7fUL) << 16; /* AVA field */
77 va_low = pte_index >> 3;
78 if (v & HPTE_V_SECONDARY)
80 /* xor vsid from AVA */
81 if (!(v & HPTE_V_1TB_SEG))
86 if (v & HPTE_V_LARGE) {
87 rb |= 1; /* L field */
88 if (cpu_has_feature(CPU_FTR_ARCH_206) &&
90 /* non-16MB large page, must be 64k */
91 /* (masks depend on page size) */
92 rb |= 0x1000; /* page encoding in LP field */
93 rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
94 rb |= (va_low & 0xfe); /* AVAL field (P7 doesn't seem to care) */
98 rb |= (va_low & 0x7ff) << 12; /* remaining 11b of VA */
100 rb |= (v >> 54) & 0x300; /* B field */
104 static inline unsigned long hpte_page_size(unsigned long h, unsigned long l)
106 /* only handle 4k, 64k and 16M pages for now */
107 if (!(h & HPTE_V_LARGE))
108 return 1ul << 12; /* 4k page */
109 if ((l & 0xf000) == 0x1000 && cpu_has_feature(CPU_FTR_ARCH_206))
110 return 1ul << 16; /* 64k page */
111 if ((l & 0xff000) == 0)
112 return 1ul << 24; /* 16M page */
113 return 0; /* error */
116 #endif /* __ASM_KVM_BOOK3S_64_H__ */