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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 IBM Corp. 2007
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#ifndef __POWERPC_KVM_HOST_H__
21#define __POWERPC_KVM_HOST_H__
22
23#include <linux/mutex.h>
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24#include <linux/hrtimer.h>
25#include <linux/interrupt.h>
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26#include <linux/types.h>
27#include <linux/kvm_types.h>
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28#include <linux/threads.h>
29#include <linux/spinlock.h>
96bc451a 30#include <linux/kvm_para.h>
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31#include <linux/list.h>
32#include <linux/atomic.h>
bbf45ba5 33#include <asm/kvm_asm.h>
371fefd6 34#include <asm/processor.h>
bbf45ba5 35
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36#define KVM_MAX_VCPUS NR_CPUS
37#define KVM_MAX_VCORES NR_CPUS
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38#define KVM_MEMORY_SLOTS 32
39/* memory slots that does not exposed to userspace */
40#define KVM_PRIVATE_MEM_SLOTS 4
41
de56a948 42#ifdef CONFIG_KVM_MMIO
588968b6 43#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
de56a948 44#endif
588968b6 45
bbf45ba5 46/* We don't currently support large pages. */
82855413 47#define KVM_HPAGE_GFN_SHIFT(x) 0
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48#define KVM_NR_PAGE_SIZES 1
49#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
bbf45ba5 50
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51#define HPTEG_CACHE_NUM (1 << 15)
52#define HPTEG_HASH_BITS_PTE 13
2d27fc5e 53#define HPTEG_HASH_BITS_PTE_LONG 12
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54#define HPTEG_HASH_BITS_VPTE 13
55#define HPTEG_HASH_BITS_VPTE_LONG 5
56#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
2d27fc5e 57#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
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58#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
59#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
ca95150b 60
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61/* Physical Address Mask - allowed range of real mode RAM access */
62#define KVM_PAM 0x0fffffffffffffffULL
63
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64struct kvm;
65struct kvm_run;
66struct kvm_vcpu;
67
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68struct lppaca;
69struct slb_shadow;
70struct dtl;
71
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72struct kvm_vm_stat {
73 u32 remote_tlb_flush;
74};
75
76struct kvm_vcpu_stat {
77 u32 sum_exits;
78 u32 mmio_exits;
79 u32 dcr_exits;
80 u32 signal_exits;
81 u32 light_exits;
82 /* Account for special types of light exits: */
83 u32 itlb_real_miss_exits;
84 u32 itlb_virt_miss_exits;
85 u32 dtlb_real_miss_exits;
86 u32 dtlb_virt_miss_exits;
87 u32 syscall_exits;
88 u32 isi_exits;
89 u32 dsi_exits;
90 u32 emulated_inst_exits;
91 u32 dec_exits;
92 u32 ext_intr_exits;
45c5eb67 93 u32 halt_wakeup;
00c3a37c 94#ifdef CONFIG_PPC_BOOK3S
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95 u32 pf_storage;
96 u32 pf_instruc;
97 u32 sp_storage;
98 u32 sp_instruc;
99 u32 queue_intr;
100 u32 ld;
101 u32 ld_slow;
102 u32 st;
103 u32 st_slow;
104#endif
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105};
106
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107enum kvm_exit_types {
108 MMIO_EXITS,
109 DCR_EXITS,
110 SIGNAL_EXITS,
111 ITLB_REAL_MISS_EXITS,
112 ITLB_VIRT_MISS_EXITS,
113 DTLB_REAL_MISS_EXITS,
114 DTLB_VIRT_MISS_EXITS,
115 SYSCALL_EXITS,
116 ISI_EXITS,
117 DSI_EXITS,
118 EMULATED_INST_EXITS,
119 EMULATED_MTMSRWE_EXITS,
120 EMULATED_WRTEE_EXITS,
121 EMULATED_MTSPR_EXITS,
122 EMULATED_MFSPR_EXITS,
123 EMULATED_MTMSR_EXITS,
124 EMULATED_MFMSR_EXITS,
125 EMULATED_TLBSX_EXITS,
126 EMULATED_TLBWE_EXITS,
127 EMULATED_RFI_EXITS,
128 DEC_EXITS,
129 EXT_INTR_EXITS,
130 HALT_WAKEUP,
131 USR_PR_INST,
132 FP_UNAVAIL,
133 DEBUG_EXITS,
134 TIMEINGUEST,
135 __NUMBER_OF_KVM_EXIT_TYPES
136};
137
73e75b41 138/* allow access to big endian 32bit upper/lower parts and 64bit var */
7b701591 139struct kvmppc_exit_timing {
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140 union {
141 u64 tv64;
142 struct {
143 u32 tbu, tbl;
144 } tv32;
145 };
146};
73e75b41 147
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148struct kvmppc_pginfo {
149 unsigned long pfn;
150 atomic_t refcnt;
151};
152
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153struct kvmppc_spapr_tce_table {
154 struct list_head list;
155 struct kvm *kvm;
156 u64 liobn;
157 u32 window_size;
158 struct page *pages[0];
159};
160
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161struct kvmppc_rma_info {
162 void *base_virt;
163 unsigned long base_pfn;
164 unsigned long npages;
165 struct list_head list;
166 atomic_t use_count;
167};
168
bbf45ba5 169struct kvm_arch {
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170#ifdef CONFIG_KVM_BOOK3S_64_HV
171 unsigned long hpt_virt;
172 unsigned long ram_npages;
173 unsigned long ram_psize;
174 unsigned long ram_porder;
175 struct kvmppc_pginfo *ram_pginfo;
176 unsigned int lpid;
177 unsigned int host_lpid;
178 unsigned long host_lpcr;
179 unsigned long sdr1;
180 unsigned long host_sdr1;
181 int tlbie_lock;
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182 int n_rma_pages;
183 unsigned long lpcr;
184 unsigned long rmor;
185 struct kvmppc_rma_info *rma;
54738c09 186 struct list_head spapr_tce_tables;
de56a948 187 unsigned short last_vcpu[NR_CPUS];
371fefd6 188 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
de56a948 189#endif /* CONFIG_KVM_BOOK3S_64_HV */
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190};
191
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192/*
193 * Struct for a virtual core.
194 * Note: entry_exit_count combines an entry count in the bottom 8 bits
195 * and an exit count in the next 8 bits. This is so that we can
196 * atomically increment the entry count iff the exit count is 0
197 * without taking the lock.
198 */
199struct kvmppc_vcore {
200 int n_runnable;
19ccb76a 201 int n_busy;
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202 int num_threads;
203 int entry_exit_count;
204 int n_woken;
205 int nap_count;
19ccb76a 206 int napping_threads;
371fefd6 207 u16 pcpu;
19ccb76a 208 u8 vcore_state;
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209 u8 in_guest;
210 struct list_head runnable_threads;
211 spinlock_t lock;
19ccb76a 212 wait_queue_head_t wq;
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213};
214
215#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
216#define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
217
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218/* Values for vcore_state */
219#define VCORE_INACTIVE 0
220#define VCORE_RUNNING 1
221#define VCORE_EXITING 2
222#define VCORE_SLEEPING 3
223
ca95150b 224struct kvmppc_pte {
af7b4d10 225 ulong eaddr;
ca95150b 226 u64 vpage;
af7b4d10 227 ulong raddr;
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228 bool may_read : 1;
229 bool may_write : 1;
230 bool may_execute : 1;
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231};
232
233struct kvmppc_mmu {
234 /* book3s_64 only */
235 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
236 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
237 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
238 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
239 void (*slbia)(struct kvm_vcpu *vcpu);
240 /* book3s */
241 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
242 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
243 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
244 void (*reset_msr)(struct kvm_vcpu *vcpu);
245 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
af7b4d10 246 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
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247 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
248 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
249};
250
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251struct kvmppc_slb {
252 u64 esid;
253 u64 vsid;
254 u64 orige;
255 u64 origv;
256 bool valid : 1;
257 bool Ks : 1;
258 bool Kp : 1;
259 bool nx : 1;
260 bool large : 1; /* PTEs are 16MB */
261 bool tb : 1; /* 1TB segment */
262 bool class : 1;
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263};
264
bbf45ba5 265struct kvm_vcpu_arch {
ca95150b 266 ulong host_stack;
bbf45ba5 267 u32 host_pid;
00c3a37c 268#ifdef CONFIG_PPC_BOOK3S
c4befc58 269 struct kvmppc_slb slb[64];
de56a948 270 int slb_max; /* 1 + index of last valid entry in slb[] */
c4befc58 271 int slb_nr; /* total number of entries in SLB */
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272 struct kvmppc_mmu mmu;
273#endif
bbf45ba5 274
5cf8ca22 275 ulong gpr[32];
bbf45ba5 276
180a34d2 277 u64 fpr[32];
c62e096d 278 u64 fpscr;
180a34d2 279
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280#ifdef CONFIG_SPE
281 ulong evr[32];
282 ulong spefscr;
283 ulong host_spefscr;
284 u64 acc;
285#endif
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286#ifdef CONFIG_ALTIVEC
287 vector128 vr[32];
288 vector128 vscr;
289#endif
290
291#ifdef CONFIG_VSX
de56a948 292 u64 vsr[64];
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293#endif
294
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295#ifdef CONFIG_PPC_BOOK3S
296 /* For Gekko paired singles */
297 u32 qpr[32];
298#endif
299
5cf8ca22 300 ulong pc;
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301 ulong ctr;
302 ulong lr;
7e57cba0 303
5cf8ca22 304 ulong xer;
7e57cba0 305 u32 cr;
bbf45ba5 306
00c3a37c 307#ifdef CONFIG_PPC_BOOK3S
ca95150b 308 ulong hflags;
180a34d2 309 ulong guest_owned_ext;
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310 ulong purr;
311 ulong spurr;
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312 ulong dscr;
313 ulong amr;
314 ulong uamor;
315 u32 ctrl;
316 ulong dabr;
ca95150b 317#endif
eab17672 318 u32 vrsave; /* also USPRG0 */
bbf45ba5 319 u32 mmucr;
ecee273f 320 ulong shadow_msr;
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321 ulong csrr0;
322 ulong csrr1;
323 ulong dsrr0;
324 ulong dsrr1;
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325 ulong mcsrr0;
326 ulong mcsrr1;
327 ulong mcsr;
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328 u32 dec;
329 u32 decar;
330 u32 tbl;
331 u32 tbu;
332 u32 tcr;
333 u32 tsr;
bb3a8a17 334 u32 ivor[64];
5cf8ca22 335 ulong ivpr;
ca95150b 336 u32 pvr;
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337
338 u32 shadow_pid;
dd9ebf1f 339 u32 shadow_pid1;
bbf45ba5 340 u32 pid;
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341 u32 swap_pid;
342
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343 u32 ccr0;
344 u32 ccr1;
345 u32 dbcr0;
346 u32 dbcr1;
f7b200af 347 u32 dbsr;
bbf45ba5 348
de56a948 349 u64 mmcr[3];
9e368f29 350 u32 pmc[8];
de56a948 351
73e75b41 352#ifdef CONFIG_KVM_EXIT_TIMING
09000adb 353 struct mutex exit_timing_lock;
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354 struct kvmppc_exit_timing timing_exit;
355 struct kvmppc_exit_timing timing_last_enter;
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356 u32 last_exit_type;
357 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
358 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
359 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
360 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
361 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
362 u64 timing_last_exit;
363 struct dentry *debugfs_exit_timing;
364#endif
365
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366#ifdef CONFIG_PPC_BOOK3S
367 ulong fault_dar;
368 u32 fault_dsisr;
369#endif
370
0604675f 371#ifdef CONFIG_BOOKE
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372 ulong fault_dear;
373 ulong fault_esr;
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374 ulong queued_dear;
375 ulong queued_esr;
0604675f 376#endif
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377 gpa_t paddr_accessed;
378
379 u8 io_gpr; /* GPR used as IO source/target */
380 u8 mmio_is_bigendian;
3587d534 381 u8 mmio_sign_extend;
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382 u8 dcr_needed;
383 u8 dcr_is_write;
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384 u8 osi_needed;
385 u8 osi_enabled;
9432ba60 386 u8 papr_enabled;
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387 u8 sane;
388 u8 cpu_type;
de56a948 389 u8 hcall_needed;
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390
391 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
392
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393 struct hrtimer dec_timer;
394 struct tasklet_struct tasklet;
ca95150b 395 u64 dec_jiffies;
de56a948 396 u64 dec_expires;
bbf45ba5 397 unsigned long pending_exceptions;
de56a948 398 u16 last_cpu;
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399 u8 ceded;
400 u8 prodded;
de56a948 401 u32 last_inst;
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402
403 struct lppaca *vpa;
404 struct slb_shadow *slb_shadow;
405 struct dtl *dtl;
406 struct dtl *dtl_end;
371fefd6 407
19ccb76a 408 wait_queue_head_t *wqp;
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409 struct kvmppc_vcore *vcore;
410 int ret;
de56a948 411 int trap;
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412 int state;
413 int ptid;
19ccb76a 414 bool timer_running;
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415 wait_queue_head_t cpu_run;
416
96bc451a 417 struct kvm_vcpu_arch_shared *shared;
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418 unsigned long magic_page_pa; /* phys addr to map the magic page to */
419 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
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420
421#ifdef CONFIG_KVM_BOOK3S_64_HV
422 struct kvm_vcpu_arch_shared shregs;
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423
424 struct list_head run_list;
425 struct task_struct *run_task;
426 struct kvm_run *kvm_run;
de56a948 427#endif
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428};
429
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430/* Values for vcpu->arch.state */
431#define KVMPPC_VCPU_STOPPED 0
432#define KVMPPC_VCPU_BUSY_IN_HOST 1
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433#define KVMPPC_VCPU_RUNNABLE 2
434
bbf45ba5 435#endif /* __POWERPC_KVM_HOST_H__ */