1 /*
2 * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
3 *
4 * Author: Yu Liu, <yu.liu@freescale.com>
5 *
6 * Description:
7 * This file is derived from arch/powerpc/include/asm/kvm_44x.h,
8 * by Hollis Blanchard <hollisb@us.ibm.com>.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License, version 2, as
12 * published by the Free Software Foundation.
13 */
14
15 #ifndef __ASM_KVM_E500_H__
16 #define __ASM_KVM_E500_H__
17
18 #include <linux/kvm_host.h>
19
20 #define BOOKE_INTERRUPT_SIZE 36
21
22 #define E500_PID_NUM 3
23 #define E500_TLB_NUM 2
24
25 #define E500_TLB_VALID 1
26 #define E500_TLB_DIRTY 2
27
28 struct tlbe_ref {
29 pfn_t pfn;
30 unsigned int flags; /* E500_TLB_* */
31 };
32
33 struct tlbe_priv {
34 struct tlbe_ref ref; /* TLB0 only -- TLB1 uses tlb_refs */
35 };
36
37 struct vcpu_id_table;
38
39 struct kvmppc_e500_tlb_params {
40 int entries, ways, sets;
41 };
42
43 struct kvmppc_vcpu_e500 {
44 /* Unmodified copy of the guest's TLB -- shared with host userspace. */
45 struct kvm_book3e_206_tlb_entry *gtlb_arch;
46
47 /* Starting entry number in gtlb_arch[] */
48 int gtlb_offset[E500_TLB_NUM];
49
50 /* KVM internal information associated with each guest TLB entry */
51 struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
52
53 struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM];
54
55 unsigned int gtlb_nv[E500_TLB_NUM];
56
57 /*
58 * information associated with each host TLB entry --
59 * TLB1 only for now. If/when guest TLB1 entries can be
60 * mapped with host TLB0, this will be used for that too.
61 *
62 * We don't want to use this for guest TLB0 because then we'd
63 * have the overhead of doing the translation again even if
64 * the entry is still in the guest TLB (e.g. we swapped out
65 * and back, and our host TLB entries got evicted).
66 */
67 struct tlbe_ref *tlb_refs[E500_TLB_NUM];
68 unsigned int host_tlb1_nv;
69
70 u32 host_pid[E500_PID_NUM];
71 u32 pid[E500_PID_NUM];
72 u32 svr;
73
74 /* vcpu id table */
75 struct vcpu_id_table *idt;
76
77 u32 l1csr0;
78 u32 l1csr1;
79 u32 hid0;
80 u32 hid1;
81 u32 tlb0cfg;
82 u32 tlb1cfg;
83 u64 mcar;
84
85 struct page **shared_tlb_pages;
86 int num_shared_tlb_pages;
87
88 struct kvm_vcpu vcpu;
89 };
90
to_e500(struct kvm_vcpu * vcpu)91 static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
92 {
93 return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
94 }
95
96 #endif /* __ASM_KVM_E500_H__ */
97