tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 2009
16 *
17 * Authors: Alexander Graf <agraf@suse.de>
18 */
19
20#ifndef __ASM_KVM_BOOK3S_H__
21#define __ASM_KVM_BOOK3S_H__
22
23#include <linux/types.h>
24#include <linux/kvm_host.h>
25#include <asm/kvm_book3s_asm.h>
26
27struct kvmppc_bat {
28 u64 raw;
29 u32 bepi;
30 u32 bepi_mask;
31 u32 brpn;
32 u8 wimg;
33 u8 pp;
34 bool vs : 1;
35 bool vp : 1;
36};
37
38struct kvmppc_sid_map {
39 u64 guest_vsid;
40 u64 guest_esid;
41 u64 host_vsid;
42 bool valid : 1;
43};
44
45#define SID_MAP_BITS 9
46#define SID_MAP_NUM (1 << SID_MAP_BITS)
47#define SID_MAP_MASK (SID_MAP_NUM - 1)
48
49#ifdef CONFIG_PPC_BOOK3S_64
50#define SID_CONTEXTS 1
51#else
52#define SID_CONTEXTS 128
53#define VSID_POOL_SIZE (SID_CONTEXTS * 16)
54#endif
55
56struct hpte_cache {
57 struct hlist_node list_pte;
58 struct hlist_node list_pte_long;
59 struct hlist_node list_vpte;
60 struct hlist_node list_vpte_long;
61#ifdef CONFIG_PPC_BOOK3S_64
62 struct hlist_node list_vpte_64k;
63#endif
64 struct rcu_head rcu_head;
65 u64 host_vpn;
66 u64 pfn;
67 ulong slot;
68 struct kvmppc_pte pte;
69 int pagesize;
70};
71
72struct kvmppc_vcpu_book3s {
73 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
74 struct {
75 u64 esid;
76 u64 vsid;
77 } slb_shadow[64];
78 u8 slb_shadow_max;
79 struct kvmppc_bat ibat[8];
80 struct kvmppc_bat dbat[8];
81 u64 hid[6];
82 u64 gqr[8];
83 u64 sdr1;
84 u64 hior;
85 u64 msr_mask;
86#ifdef CONFIG_PPC_BOOK3S_32
87 u32 vsid_pool[VSID_POOL_SIZE];
88 u32 vsid_next;
89#else
90 u64 proto_vsid_first;
91 u64 proto_vsid_max;
92 u64 proto_vsid_next;
93#endif
94 int context_id[SID_CONTEXTS];
95
96 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
97
98 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
99 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
100 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
101 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
102#ifdef CONFIG_PPC_BOOK3S_64
103 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
104#endif
105 int hpte_cache_count;
106 spinlock_t mmu_lock;
107};
108
109#define VSID_REAL 0x07ffffffffc00000ULL
110#define VSID_BAT 0x07ffffffffb00000ULL
111#define VSID_64K 0x0800000000000000ULL
112#define VSID_1T 0x1000000000000000ULL
113#define VSID_REAL_DR 0x2000000000000000ULL
114#define VSID_REAL_IR 0x4000000000000000ULL
115#define VSID_PR 0x8000000000000000ULL
116
117extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
118extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
119extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
120extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
121extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
122extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
123extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
124extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
125 bool iswrite);
126extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
127extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
128extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
129extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
130extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
131 struct kvm_vcpu *vcpu, unsigned long addr,
132 unsigned long status);
133extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
134 unsigned long slb_v, unsigned long valid);
135
136extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
137extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
138extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
139extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
140extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
141extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
142extern int kvmppc_mmu_hpte_sysinit(void);
143extern void kvmppc_mmu_hpte_sysexit(void);
144extern int kvmppc_mmu_hv_init(void);
145extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
146
147/* XXX remove this export when load_last_inst() is generic */
148extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
149extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
150extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
151 unsigned int vec);
152extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
153extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
154 bool upper, u32 val);
155extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
156extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
157extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
158 bool writing, bool *writable);
159extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
160 unsigned long *rmap, long pte_index, int realmode);
161extern void kvmppc_update_rmap_change(unsigned long *rmap, unsigned long psize);
162extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
163 unsigned long pte_index);
164void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
165 unsigned long pte_index);
166extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
167 unsigned long *nb_ret);
168extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
169 unsigned long gpa, bool dirty);
170extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
171 long pte_index, unsigned long pteh, unsigned long ptel,
172 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
173extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
174 unsigned long pte_index, unsigned long avpn,
175 unsigned long *hpret);
176extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
177 struct kvm_memory_slot *memslot, unsigned long *map);
178extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
179 unsigned long mask);
180extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
181
182extern void kvmppc_entry_trampoline(void);
183extern void kvmppc_hv_entry_trampoline(void);
184extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
185extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
186extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
187extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
188extern int kvmppc_hcall_impl_pr(unsigned long cmd);
189extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
190extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
191 struct kvm_vcpu *vcpu);
192extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
193 struct kvmppc_book3s_shadow_vcpu *svcpu);
194
195static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
196{
197 return vcpu->arch.book3s;
198}
199
200/* Also add subarch specific defines */
201
202#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
203#include <asm/kvm_book3s_32.h>
204#endif
205#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
206#include <asm/kvm_book3s_64.h>
207#endif
208
209static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
210{
211 vcpu->arch.gpr[num] = val;
212}
213
214static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
215{
216 return vcpu->arch.gpr[num];
217}
218
219static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
220{
221 vcpu->arch.cr = val;
222}
223
224static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
225{
226 return vcpu->arch.cr;
227}
228
229static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
230{
231 vcpu->arch.xer = val;
232}
233
234static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
235{
236 return vcpu->arch.xer;
237}
238
239static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
240{
241 vcpu->arch.ctr = val;
242}
243
244static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
245{
246 return vcpu->arch.ctr;
247}
248
249static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
250{
251 vcpu->arch.lr = val;
252}
253
254static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
255{
256 return vcpu->arch.lr;
257}
258
259static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
260{
261 vcpu->arch.pc = val;
262}
263
264static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
265{
266 return vcpu->arch.pc;
267}
268
269static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
270static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
271{
272 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
273}
274
275static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
276{
277 return vcpu->arch.fault_dar;
278}
279
280static inline bool is_kvmppc_resume_guest(int r)
281{
282 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
283}
284
285static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
286static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
287{
288 /* Only PR KVM supports the magic page */
289 return !is_kvmppc_hv_enabled(vcpu->kvm);
290}
291
292extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
293extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
294
295/* Magic register values loaded into r3 and r4 before the 'sc' assembly
296 * instruction for the OSI hypercalls */
297#define OSI_SC_MAGIC_R3 0x113724FA
298#define OSI_SC_MAGIC_R4 0x77810F9B
299
300#define INS_DCBZ 0x7c0007ec
301/* TO = 31 for unconditional trap */
302#define INS_TW 0x7fe00008
303
304/* LPIDs we support with this build -- runtime limit may be lower */
305#define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
306
307#define SPLIT_HACK_MASK 0xff000000
308#define SPLIT_HACK_OFFS 0xfb000000
309
310#endif /* __ASM_KVM_BOOK3S_H__ */