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
72/*
73 * Struct for a virtual core.
74 * Note: entry_exit_map combines a bitmap of threads that have entered
75 * in the bottom 8 bits and a bitmap of threads that have exited in the
76 * next 8 bits. This is so that we can atomically set the entry bit
77 * iff the exit map is 0 without taking a lock.
78 */
79struct kvmppc_vcore {
80 int n_runnable;
81 int num_threads;
82 int entry_exit_map;
83 int napping_threads;
84 int first_vcpuid;
85 u16 pcpu;
86 u16 last_cpu;
87 u8 vcore_state;
88 u8 in_guest;
89 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
90 struct list_head preempt_list;
91 spinlock_t lock;
92 struct swait_queue_head wq;
93 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
94 u64 stolen_tb;
95 u64 preempt_tb;
96 struct kvm_vcpu *runner;
97 struct kvm *kvm;
98 u64 tb_offset; /* guest timebase - host timebase */
99 u64 tb_offset_applied; /* timebase offset currently in force */
100 ulong lpcr;
101 u32 arch_compat;
102 ulong pcr;
103 ulong dpdes; /* doorbell state (POWER8) */
104 ulong vtb; /* virtual timebase */
105 ulong conferring_threads;
106 unsigned int halt_poll_ns;
107 atomic_t online_count;
108};
109
110struct kvmppc_vcpu_book3s {
111 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
112 struct {
113 u64 esid;
114 u64 vsid;
115 } slb_shadow[64];
116 u8 slb_shadow_max;
117 struct kvmppc_bat ibat[8];
118 struct kvmppc_bat dbat[8];
119 u64 hid[6];
120 u64 gqr[8];
121 u64 sdr1;
122 u64 hior;
123 u64 msr_mask;
124 u64 vtb;
125#ifdef CONFIG_PPC_BOOK3S_32
126 u32 vsid_pool[VSID_POOL_SIZE];
127 u32 vsid_next;
128#else
129 u64 proto_vsid_first;
130 u64 proto_vsid_max;
131 u64 proto_vsid_next;
132#endif
133 int context_id[SID_CONTEXTS];
134
135 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
136
137 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
138 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
139 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
140 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
141#ifdef CONFIG_PPC_BOOK3S_64
142 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
143#endif
144 int hpte_cache_count;
145 spinlock_t mmu_lock;
146};
147
148#define VSID_REAL 0x07ffffffffc00000ULL
149#define VSID_BAT 0x07ffffffffb00000ULL
150#define VSID_64K 0x0800000000000000ULL
151#define VSID_1T 0x1000000000000000ULL
152#define VSID_REAL_DR 0x2000000000000000ULL
153#define VSID_REAL_IR 0x4000000000000000ULL
154#define VSID_PR 0x8000000000000000ULL
155
156extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
157extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
158extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
159extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
160extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
161extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
162extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
163extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
164 bool iswrite);
165extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
166extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
167extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
168extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
169extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
170 struct kvm_vcpu *vcpu, unsigned long addr,
171 unsigned long status);
172extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
173 unsigned long slb_v, unsigned long valid);
174extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
175 unsigned long gpa, gva_t ea, int is_store);
176
177extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
178extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
179extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
180extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
181extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
182extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
183extern int kvmppc_mmu_hpte_sysinit(void);
184extern void kvmppc_mmu_hpte_sysexit(void);
185extern int kvmppc_mmu_hv_init(void);
186extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
187
188extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
189 struct kvm_vcpu *vcpu,
190 unsigned long ea, unsigned long dsisr);
191extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
192 struct kvmppc_pte *gpte, bool data, bool iswrite);
193extern int kvmppc_init_vm_radix(struct kvm *kvm);
194extern void kvmppc_free_radix(struct kvm *kvm);
195extern int kvmppc_radix_init(void);
196extern void kvmppc_radix_exit(void);
197extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
198 unsigned long gfn);
199extern int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
200 unsigned long gfn);
201extern int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
202 unsigned long gfn);
203extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
204 struct kvm_memory_slot *memslot, unsigned long *map);
205extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
206
207/* XXX remove this export when load_last_inst() is generic */
208extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
209extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
210extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
211 unsigned int vec);
212extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
213extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
214extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
215 bool upper, u32 val);
216extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
217extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
218extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
219 bool writing, bool *writable);
220extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
221 unsigned long *rmap, long pte_index, int realmode);
222extern void kvmppc_update_dirty_map(struct kvm_memory_slot *memslot,
223 unsigned long gfn, unsigned long psize);
224extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
225 unsigned long pte_index);
226void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
227 unsigned long pte_index);
228extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
229 unsigned long *nb_ret);
230extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
231 unsigned long gpa, bool dirty);
232extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
233 long pte_index, unsigned long pteh, unsigned long ptel,
234 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
235extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
236 unsigned long pte_index, unsigned long avpn,
237 unsigned long *hpret);
238extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
239 struct kvm_memory_slot *memslot, unsigned long *map);
240extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
241 struct kvm_memory_slot *memslot,
242 unsigned long *map);
243extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
244 unsigned long mask);
245extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
246
247extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu);
248extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu);
249extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu);
250
251extern void kvmppc_entry_trampoline(void);
252extern void kvmppc_hv_entry_trampoline(void);
253extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
254extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
255extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
256extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
257extern int kvmppc_hcall_impl_pr(unsigned long cmd);
258extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
259extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu);
260extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu);
261
262#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
263void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu);
264void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu);
265void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu);
266void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu);
267#else
268static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {}
269static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {}
270static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {}
271static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {}
272#endif
273
274void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
275
276extern int kvm_irq_bypass;
277
278static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
279{
280 return vcpu->arch.book3s;
281}
282
283/* Also add subarch specific defines */
284
285#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
286#include <asm/kvm_book3s_32.h>
287#endif
288#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
289#include <asm/kvm_book3s_64.h>
290#endif
291
292static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
293{
294 vcpu->arch.regs.gpr[num] = val;
295}
296
297static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
298{
299 return vcpu->arch.regs.gpr[num];
300}
301
302static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
303{
304 vcpu->arch.cr = val;
305}
306
307static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
308{
309 return vcpu->arch.cr;
310}
311
312static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
313{
314 vcpu->arch.regs.xer = val;
315}
316
317static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
318{
319 return vcpu->arch.regs.xer;
320}
321
322static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
323{
324 vcpu->arch.regs.ctr = val;
325}
326
327static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
328{
329 return vcpu->arch.regs.ctr;
330}
331
332static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
333{
334 vcpu->arch.regs.link = val;
335}
336
337static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
338{
339 return vcpu->arch.regs.link;
340}
341
342static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
343{
344 vcpu->arch.regs.nip = val;
345}
346
347static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
348{
349 return vcpu->arch.regs.nip;
350}
351
352static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
353static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
354{
355 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
356}
357
358static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
359{
360 return vcpu->arch.fault_dar;
361}
362
363static inline bool is_kvmppc_resume_guest(int r)
364{
365 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
366}
367
368static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
369static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
370{
371 /* Only PR KVM supports the magic page */
372 return !is_kvmppc_hv_enabled(vcpu->kvm);
373}
374
375extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
376extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
377
378/* Magic register values loaded into r3 and r4 before the 'sc' assembly
379 * instruction for the OSI hypercalls */
380#define OSI_SC_MAGIC_R3 0x113724FA
381#define OSI_SC_MAGIC_R4 0x77810F9B
382
383#define INS_DCBZ 0x7c0007ec
384/* TO = 31 for unconditional trap */
385#define INS_TW 0x7fe00008
386
387/* LPIDs we support with this build -- runtime limit may be lower */
388#define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
389
390#define SPLIT_HACK_MASK 0xff000000
391#define SPLIT_HACK_OFFS 0xfb000000
392
393#endif /* __ASM_KVM_BOOK3S_H__ */