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 pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
158			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_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
162			unsigned long pte_index);
163void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
164			unsigned long pte_index);
165extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
166			unsigned long *nb_ret);
167extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
168			unsigned long gpa, bool dirty);
169extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
170			long pte_index, unsigned long pteh, unsigned long ptel,
171			pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
172extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
173			unsigned long pte_index, unsigned long avpn,
174			unsigned long *hpret);
175extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
176			struct kvm_memory_slot *memslot, unsigned long *map);
177extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
178			unsigned long mask);
179extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
180
181extern void kvmppc_entry_trampoline(void);
182extern void kvmppc_hv_entry_trampoline(void);
183extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
184extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
185extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
186extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
187extern int kvmppc_hcall_impl_pr(unsigned long cmd);
188extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
189extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
190				 struct kvm_vcpu *vcpu);
191extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
192				   struct kvmppc_book3s_shadow_vcpu *svcpu);
193
194static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
195{
196	return vcpu->arch.book3s;
197}
198
199/* Also add subarch specific defines */
200
201#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
202#include <asm/kvm_book3s_32.h>
203#endif
204#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
205#include <asm/kvm_book3s_64.h>
206#endif
207
208static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
209{
210	vcpu->arch.gpr[num] = val;
211}
212
213static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
214{
215	return vcpu->arch.gpr[num];
216}
217
218static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
219{
220	vcpu->arch.cr = val;
221}
222
223static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
224{
225	return vcpu->arch.cr;
226}
227
228static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
229{
230	vcpu->arch.xer = val;
231}
232
233static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
234{
235	return vcpu->arch.xer;
236}
237
238static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
239{
240	vcpu->arch.ctr = val;
241}
242
243static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
244{
245	return vcpu->arch.ctr;
246}
247
248static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
249{
250	vcpu->arch.lr = val;
251}
252
253static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
254{
255	return vcpu->arch.lr;
256}
257
258static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
259{
260	vcpu->arch.pc = val;
261}
262
263static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
264{
265	return vcpu->arch.pc;
266}
267
268static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
269static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
270{
271	return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
272}
273
274static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
275{
276	return vcpu->arch.fault_dar;
277}
278
279static inline bool is_kvmppc_resume_guest(int r)
280{
281	return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
282}
283
284static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
285static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
286{
287	/* Only PR KVM supports the magic page */
288	return !is_kvmppc_hv_enabled(vcpu->kvm);
289}
290
291extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
292extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
293
294/* Magic register values loaded into r3 and r4 before the 'sc' assembly
295 * instruction for the OSI hypercalls */
296#define OSI_SC_MAGIC_R3			0x113724FA
297#define OSI_SC_MAGIC_R4			0x77810F9B
298
299#define INS_DCBZ			0x7c0007ec
300/* TO = 31 for unconditional trap */
301#define INS_TW				0x7fe00008
302
303/* LPIDs we support with this build -- runtime limit may be lower */
304#define KVMPPC_NR_LPIDS			(LPID_RSVD + 1)
305
306#define SPLIT_HACK_MASK			0xff000000
307#define SPLIT_HACK_OFFS			0xfb000000
308
309#endif /* __ASM_KVM_BOOK3S_H__ */
310