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3ae07890 AG |
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 SUSE Linux Products GmbH 2010 | |
16 | * | |
17 | * Authors: Alexander Graf <agraf@suse.de> | |
18 | */ | |
19 | ||
20 | #ifndef __ASM_KVM_BOOK3S_64_H__ | |
21 | #define __ASM_KVM_BOOK3S_64_H__ | |
22 | ||
de56a948 | 23 | #ifdef CONFIG_KVM_BOOK3S_PR |
468a12c2 | 24 | static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu *vcpu) |
3ae07890 | 25 | { |
468a12c2 | 26 | preempt_disable(); |
3ae07890 AG |
27 | return &get_paca()->shadow_vcpu; |
28 | } | |
468a12c2 AG |
29 | |
30 | static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu) | |
31 | { | |
32 | preempt_enable(); | |
33 | } | |
de56a948 | 34 | #endif |
3ae07890 | 35 | |
54738c09 DG |
36 | #define SPAPR_TCE_SHIFT 12 |
37 | ||
8936dda4 PM |
38 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
39 | /* For now use fixed-size 16MB page table */ | |
40 | #define HPT_ORDER 24 | |
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) | |
44 | #endif | |
45 | ||
075295dd PM |
46 | /* |
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 | |
49 | * HPTEs. | |
50 | */ | |
51 | #define HPTE_V_HVLOCK 0x40UL | |
52 | ||
53 | static inline long try_lock_hpte(unsigned long *hpte, unsigned long bits) | |
54 | { | |
55 | unsigned long tmp, old; | |
56 | ||
57 | asm volatile(" ldarx %0,0,%2\n" | |
58 | " and. %1,%0,%3\n" | |
59 | " bne 2f\n" | |
60 | " ori %0,%0,%4\n" | |
61 | " stdcx. %0,0,%2\n" | |
62 | " beq+ 2f\n" | |
63 | " li %1,%3\n" | |
64 | "2: isync" | |
65 | : "=&r" (tmp), "=&r" (old) | |
66 | : "r" (hpte), "r" (bits), "i" (HPTE_V_HVLOCK) | |
67 | : "cc", "memory"); | |
68 | return old == 0; | |
69 | } | |
70 | ||
36cc66d6 AS |
71 | static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r, |
72 | unsigned long pte_index) | |
73 | { | |
74 | unsigned long rb, va_low; | |
75 | ||
76 | rb = (v & ~0x7fUL) << 16; /* AVA field */ | |
77 | va_low = pte_index >> 3; | |
78 | if (v & HPTE_V_SECONDARY) | |
79 | va_low = ~va_low; | |
80 | /* xor vsid from AVA */ | |
81 | if (!(v & HPTE_V_1TB_SEG)) | |
82 | va_low ^= v >> 12; | |
83 | else | |
84 | va_low ^= v >> 24; | |
85 | va_low &= 0x7ff; | |
86 | if (v & HPTE_V_LARGE) { | |
87 | rb |= 1; /* L field */ | |
88 | if (cpu_has_feature(CPU_FTR_ARCH_206) && | |
89 | (r & 0xff000)) { | |
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) */ | |
95 | } | |
96 | } else { | |
97 | /* 4kB page */ | |
98 | rb |= (va_low & 0x7ff) << 12; /* remaining 11b of VA */ | |
99 | } | |
100 | rb |= (v >> 54) & 0x300; /* B field */ | |
101 | return rb; | |
102 | } | |
103 | ||
3ae07890 | 104 | #endif /* __ASM_KVM_BOOK3S_64_H__ */ |