KVM: PPC: Book3S HV: Store LPCR value for each virtual core
[deliverable/linux.git] / arch / powerpc / include / asm / kvm_host.h
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>
24 #include <linux/hrtimer.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/kvm_types.h>
28 #include <linux/threads.h>
29 #include <linux/spinlock.h>
30 #include <linux/kvm_para.h>
31 #include <linux/list.h>
32 #include <linux/atomic.h>
33 #include <asm/kvm_asm.h>
34 #include <asm/processor.h>
35 #include <asm/page.h>
36 #include <asm/cacheflush.h>
37
38 #define KVM_MAX_VCPUS NR_CPUS
39 #define KVM_MAX_VCORES NR_CPUS
40 #define KVM_USER_MEM_SLOTS 32
41 #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
42
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
45 #endif
46
47 /* These values are internal and can be increased later */
48 #define KVM_NR_IRQCHIPS 1
49 #define KVM_IRQCHIP_NUM_PINS 256
50
51 #if !defined(CONFIG_KVM_440)
52 #include <linux/mmu_notifier.h>
53
54 #define KVM_ARCH_WANT_MMU_NOTIFIER
55
56 struct kvm;
57 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
58 extern int kvm_unmap_hva_range(struct kvm *kvm,
59 unsigned long start, unsigned long end);
60 extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
61 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
62 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
63
64 #endif
65
66 #define HPTEG_CACHE_NUM (1 << 15)
67 #define HPTEG_HASH_BITS_PTE 13
68 #define HPTEG_HASH_BITS_PTE_LONG 12
69 #define HPTEG_HASH_BITS_VPTE 13
70 #define HPTEG_HASH_BITS_VPTE_LONG 5
71 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
72 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
73 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
74 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
75
76 /* Physical Address Mask - allowed range of real mode RAM access */
77 #define KVM_PAM 0x0fffffffffffffffULL
78
79 struct kvm;
80 struct kvm_run;
81 struct kvm_vcpu;
82
83 struct lppaca;
84 struct slb_shadow;
85 struct dtl_entry;
86
87 struct kvm_vm_stat {
88 u32 remote_tlb_flush;
89 };
90
91 struct kvm_vcpu_stat {
92 u32 sum_exits;
93 u32 mmio_exits;
94 u32 dcr_exits;
95 u32 signal_exits;
96 u32 light_exits;
97 /* Account for special types of light exits: */
98 u32 itlb_real_miss_exits;
99 u32 itlb_virt_miss_exits;
100 u32 dtlb_real_miss_exits;
101 u32 dtlb_virt_miss_exits;
102 u32 syscall_exits;
103 u32 isi_exits;
104 u32 dsi_exits;
105 u32 emulated_inst_exits;
106 u32 dec_exits;
107 u32 ext_intr_exits;
108 u32 halt_wakeup;
109 u32 dbell_exits;
110 u32 gdbell_exits;
111 #ifdef CONFIG_PPC_BOOK3S
112 u32 pf_storage;
113 u32 pf_instruc;
114 u32 sp_storage;
115 u32 sp_instruc;
116 u32 queue_intr;
117 u32 ld;
118 u32 ld_slow;
119 u32 st;
120 u32 st_slow;
121 #endif
122 };
123
124 enum kvm_exit_types {
125 MMIO_EXITS,
126 DCR_EXITS,
127 SIGNAL_EXITS,
128 ITLB_REAL_MISS_EXITS,
129 ITLB_VIRT_MISS_EXITS,
130 DTLB_REAL_MISS_EXITS,
131 DTLB_VIRT_MISS_EXITS,
132 SYSCALL_EXITS,
133 ISI_EXITS,
134 DSI_EXITS,
135 EMULATED_INST_EXITS,
136 EMULATED_MTMSRWE_EXITS,
137 EMULATED_WRTEE_EXITS,
138 EMULATED_MTSPR_EXITS,
139 EMULATED_MFSPR_EXITS,
140 EMULATED_MTMSR_EXITS,
141 EMULATED_MFMSR_EXITS,
142 EMULATED_TLBSX_EXITS,
143 EMULATED_TLBWE_EXITS,
144 EMULATED_RFI_EXITS,
145 EMULATED_RFCI_EXITS,
146 DEC_EXITS,
147 EXT_INTR_EXITS,
148 HALT_WAKEUP,
149 USR_PR_INST,
150 FP_UNAVAIL,
151 DEBUG_EXITS,
152 TIMEINGUEST,
153 DBELL_EXITS,
154 GDBELL_EXITS,
155 __NUMBER_OF_KVM_EXIT_TYPES
156 };
157
158 /* allow access to big endian 32bit upper/lower parts and 64bit var */
159 struct kvmppc_exit_timing {
160 union {
161 u64 tv64;
162 struct {
163 u32 tbu, tbl;
164 } tv32;
165 };
166 };
167
168 struct kvmppc_pginfo {
169 unsigned long pfn;
170 atomic_t refcnt;
171 };
172
173 struct kvmppc_spapr_tce_table {
174 struct list_head list;
175 struct kvm *kvm;
176 u64 liobn;
177 u32 window_size;
178 struct page *pages[0];
179 };
180
181 struct kvm_rma_info {
182 atomic_t use_count;
183 unsigned long base_pfn;
184 };
185
186 /* XICS components, defined in book3s_xics.c */
187 struct kvmppc_xics;
188 struct kvmppc_icp;
189
190 /*
191 * The reverse mapping array has one entry for each HPTE,
192 * which stores the guest's view of the second word of the HPTE
193 * (including the guest physical address of the mapping),
194 * plus forward and backward pointers in a doubly-linked ring
195 * of HPTEs that map the same host page. The pointers in this
196 * ring are 32-bit HPTE indexes, to save space.
197 */
198 struct revmap_entry {
199 unsigned long guest_rpte;
200 unsigned int forw, back;
201 };
202
203 /*
204 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
205 * and bit 32 as a present flag. The bottom 32 bits are the
206 * index in the guest HPT of a HPTE that points to the page.
207 */
208 #define KVMPPC_RMAP_LOCK_BIT 63
209 #define KVMPPC_RMAP_RC_SHIFT 32
210 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
211 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
212 #define KVMPPC_RMAP_PRESENT 0x100000000ul
213 #define KVMPPC_RMAP_INDEX 0xfffffffful
214
215 /* Low-order bits in memslot->arch.slot_phys[] */
216 #define KVMPPC_PAGE_ORDER_MASK 0x1f
217 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
218 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
219 #define KVMPPC_GOT_PAGE 0x80
220
221 struct kvm_arch_memory_slot {
222 #ifdef CONFIG_KVM_BOOK3S_64_HV
223 unsigned long *rmap;
224 unsigned long *slot_phys;
225 #endif /* CONFIG_KVM_BOOK3S_64_HV */
226 };
227
228 struct kvm_arch {
229 unsigned int lpid;
230 #ifdef CONFIG_KVM_BOOK3S_64_HV
231 unsigned long hpt_virt;
232 struct revmap_entry *revmap;
233 unsigned int host_lpid;
234 unsigned long host_lpcr;
235 unsigned long sdr1;
236 unsigned long host_sdr1;
237 int tlbie_lock;
238 unsigned long lpcr;
239 unsigned long rmor;
240 struct kvm_rma_info *rma;
241 unsigned long vrma_slb_v;
242 int rma_setup_done;
243 int using_mmu_notifiers;
244 u32 hpt_order;
245 atomic_t vcpus_running;
246 u32 online_vcores;
247 unsigned long hpt_npte;
248 unsigned long hpt_mask;
249 atomic_t hpte_mod_interest;
250 spinlock_t slot_phys_lock;
251 cpumask_t need_tlb_flush;
252 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
253 int hpt_cma_alloc;
254 #endif /* CONFIG_KVM_BOOK3S_64_HV */
255 #ifdef CONFIG_PPC_BOOK3S_64
256 struct list_head spapr_tce_tables;
257 struct list_head rtas_tokens;
258 #endif
259 #ifdef CONFIG_KVM_MPIC
260 struct openpic *mpic;
261 #endif
262 #ifdef CONFIG_KVM_XICS
263 struct kvmppc_xics *xics;
264 #endif
265 };
266
267 /*
268 * Struct for a virtual core.
269 * Note: entry_exit_count combines an entry count in the bottom 8 bits
270 * and an exit count in the next 8 bits. This is so that we can
271 * atomically increment the entry count iff the exit count is 0
272 * without taking the lock.
273 */
274 struct kvmppc_vcore {
275 int n_runnable;
276 int n_busy;
277 int num_threads;
278 int entry_exit_count;
279 int n_woken;
280 int nap_count;
281 int napping_threads;
282 u16 pcpu;
283 u16 last_cpu;
284 u8 vcore_state;
285 u8 in_guest;
286 struct list_head runnable_threads;
287 spinlock_t lock;
288 wait_queue_head_t wq;
289 u64 stolen_tb;
290 u64 preempt_tb;
291 struct kvm_vcpu *runner;
292 u64 tb_offset; /* guest timebase - host timebase */
293 ulong lpcr;
294 };
295
296 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
297 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
298
299 /* Values for vcore_state */
300 #define VCORE_INACTIVE 0
301 #define VCORE_SLEEPING 1
302 #define VCORE_STARTING 2
303 #define VCORE_RUNNING 3
304 #define VCORE_EXITING 4
305
306 /*
307 * Struct used to manage memory for a virtual processor area
308 * registered by a PAPR guest. There are three types of area
309 * that a guest can register.
310 */
311 struct kvmppc_vpa {
312 unsigned long gpa; /* Current guest phys addr */
313 void *pinned_addr; /* Address in kernel linear mapping */
314 void *pinned_end; /* End of region */
315 unsigned long next_gpa; /* Guest phys addr for update */
316 unsigned long len; /* Number of bytes required */
317 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
318 bool dirty; /* true => area has been modified by kernel */
319 };
320
321 struct kvmppc_pte {
322 ulong eaddr;
323 u64 vpage;
324 ulong raddr;
325 bool may_read : 1;
326 bool may_write : 1;
327 bool may_execute : 1;
328 };
329
330 struct kvmppc_mmu {
331 /* book3s_64 only */
332 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
333 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
334 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
335 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
336 void (*slbia)(struct kvm_vcpu *vcpu);
337 /* book3s */
338 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
339 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
340 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
341 void (*reset_msr)(struct kvm_vcpu *vcpu);
342 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
343 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
344 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
345 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
346 };
347
348 struct kvmppc_slb {
349 u64 esid;
350 u64 vsid;
351 u64 orige;
352 u64 origv;
353 bool valid : 1;
354 bool Ks : 1;
355 bool Kp : 1;
356 bool nx : 1;
357 bool large : 1; /* PTEs are 16MB */
358 bool tb : 1; /* 1TB segment */
359 bool class : 1;
360 };
361
362 # ifdef CONFIG_PPC_FSL_BOOK3E
363 #define KVMPPC_BOOKE_IAC_NUM 2
364 #define KVMPPC_BOOKE_DAC_NUM 2
365 # else
366 #define KVMPPC_BOOKE_IAC_NUM 4
367 #define KVMPPC_BOOKE_DAC_NUM 2
368 # endif
369 #define KVMPPC_BOOKE_MAX_IAC 4
370 #define KVMPPC_BOOKE_MAX_DAC 2
371
372 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
373 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
374 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
375 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
376
377 struct kvmppc_booke_debug_reg {
378 u32 dbcr0;
379 u32 dbcr1;
380 u32 dbcr2;
381 #ifdef CONFIG_KVM_E500MC
382 u32 dbcr4;
383 #endif
384 u64 iac[KVMPPC_BOOKE_MAX_IAC];
385 u64 dac[KVMPPC_BOOKE_MAX_DAC];
386 };
387
388 #define KVMPPC_IRQ_DEFAULT 0
389 #define KVMPPC_IRQ_MPIC 1
390 #define KVMPPC_IRQ_XICS 2
391
392 struct openpic;
393
394 struct kvm_vcpu_arch {
395 ulong host_stack;
396 u32 host_pid;
397 #ifdef CONFIG_PPC_BOOK3S
398 struct kvmppc_slb slb[64];
399 int slb_max; /* 1 + index of last valid entry in slb[] */
400 int slb_nr; /* total number of entries in SLB */
401 struct kvmppc_mmu mmu;
402 #endif
403
404 ulong gpr[32];
405
406 u64 fpr[32];
407 u64 fpscr;
408
409 #ifdef CONFIG_SPE
410 ulong evr[32];
411 ulong spefscr;
412 ulong host_spefscr;
413 u64 acc;
414 #endif
415 #ifdef CONFIG_ALTIVEC
416 vector128 vr[32];
417 vector128 vscr;
418 #endif
419
420 #ifdef CONFIG_VSX
421 u64 vsr[64];
422 #endif
423
424 #ifdef CONFIG_KVM_BOOKE_HV
425 u32 host_mas4;
426 u32 host_mas6;
427 u32 shadow_epcr;
428 u32 shadow_msrp;
429 u32 eplc;
430 u32 epsc;
431 u32 oldpir;
432 #endif
433
434 #if defined(CONFIG_BOOKE)
435 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
436 u32 epcr;
437 #endif
438 #endif
439
440 #ifdef CONFIG_PPC_BOOK3S
441 /* For Gekko paired singles */
442 u32 qpr[32];
443 #endif
444
445 ulong pc;
446 ulong ctr;
447 ulong lr;
448
449 ulong xer;
450 u32 cr;
451
452 #ifdef CONFIG_PPC_BOOK3S
453 ulong hflags;
454 ulong guest_owned_ext;
455 ulong purr;
456 ulong spurr;
457 ulong dscr;
458 ulong amr;
459 ulong uamor;
460 u32 ctrl;
461 ulong dabr;
462 ulong cfar;
463 #endif
464 u32 vrsave; /* also USPRG0 */
465 u32 mmucr;
466 /* shadow_msr is unused for BookE HV */
467 ulong shadow_msr;
468 ulong csrr0;
469 ulong csrr1;
470 ulong dsrr0;
471 ulong dsrr1;
472 ulong mcsrr0;
473 ulong mcsrr1;
474 ulong mcsr;
475 u32 dec;
476 #ifdef CONFIG_BOOKE
477 u32 decar;
478 #endif
479 u32 tbl;
480 u32 tbu;
481 u32 tcr;
482 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
483 u32 ivor[64];
484 ulong ivpr;
485 u32 pvr;
486
487 u32 shadow_pid;
488 u32 shadow_pid1;
489 u32 pid;
490 u32 swap_pid;
491
492 u32 ccr0;
493 u32 ccr1;
494 u32 dbsr;
495
496 u64 mmcr[3];
497 u32 pmc[8];
498 u64 siar;
499 u64 sdar;
500
501 #ifdef CONFIG_KVM_EXIT_TIMING
502 struct mutex exit_timing_lock;
503 struct kvmppc_exit_timing timing_exit;
504 struct kvmppc_exit_timing timing_last_enter;
505 u32 last_exit_type;
506 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
507 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
508 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
509 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
510 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
511 u64 timing_last_exit;
512 struct dentry *debugfs_exit_timing;
513 #endif
514
515 #ifdef CONFIG_PPC_BOOK3S
516 ulong fault_dar;
517 u32 fault_dsisr;
518 #endif
519
520 #ifdef CONFIG_BOOKE
521 ulong fault_dear;
522 ulong fault_esr;
523 ulong queued_dear;
524 ulong queued_esr;
525 spinlock_t wdt_lock;
526 struct timer_list wdt_timer;
527 u32 tlbcfg[4];
528 u32 tlbps[4];
529 u32 mmucfg;
530 u32 eptcfg;
531 u32 epr;
532 u32 crit_save;
533 struct kvmppc_booke_debug_reg dbg_reg;
534 #endif
535 gpa_t paddr_accessed;
536 gva_t vaddr_accessed;
537
538 u8 io_gpr; /* GPR used as IO source/target */
539 u8 mmio_is_bigendian;
540 u8 mmio_sign_extend;
541 u8 dcr_needed;
542 u8 dcr_is_write;
543 u8 osi_needed;
544 u8 osi_enabled;
545 u8 papr_enabled;
546 u8 watchdog_enabled;
547 u8 sane;
548 u8 cpu_type;
549 u8 hcall_needed;
550 u8 epr_flags; /* KVMPPC_EPR_xxx */
551 u8 epr_needed;
552
553 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
554
555 struct hrtimer dec_timer;
556 struct tasklet_struct tasklet;
557 u64 dec_jiffies;
558 u64 dec_expires;
559 unsigned long pending_exceptions;
560 u8 ceded;
561 u8 prodded;
562 u32 last_inst;
563
564 wait_queue_head_t *wqp;
565 struct kvmppc_vcore *vcore;
566 int ret;
567 int trap;
568 int state;
569 int ptid;
570 bool timer_running;
571 wait_queue_head_t cpu_run;
572
573 struct kvm_vcpu_arch_shared *shared;
574 unsigned long magic_page_pa; /* phys addr to map the magic page to */
575 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
576
577 int irq_type; /* one of KVM_IRQ_* */
578 int irq_cpu_id;
579 struct openpic *mpic; /* KVM_IRQ_MPIC */
580 #ifdef CONFIG_KVM_XICS
581 struct kvmppc_icp *icp; /* XICS presentation controller */
582 #endif
583
584 #ifdef CONFIG_KVM_BOOK3S_64_HV
585 struct kvm_vcpu_arch_shared shregs;
586
587 unsigned long pgfault_addr;
588 long pgfault_index;
589 unsigned long pgfault_hpte[2];
590
591 struct list_head run_list;
592 struct task_struct *run_task;
593 struct kvm_run *kvm_run;
594 pgd_t *pgdir;
595
596 spinlock_t vpa_update_lock;
597 struct kvmppc_vpa vpa;
598 struct kvmppc_vpa dtl;
599 struct dtl_entry *dtl_ptr;
600 unsigned long dtl_index;
601 u64 stolen_logged;
602 struct kvmppc_vpa slb_shadow;
603
604 spinlock_t tbacct_lock;
605 u64 busy_stolen;
606 u64 busy_preempt;
607 #endif
608 };
609
610 /* Values for vcpu->arch.state */
611 #define KVMPPC_VCPU_NOTREADY 0
612 #define KVMPPC_VCPU_RUNNABLE 1
613 #define KVMPPC_VCPU_BUSY_IN_HOST 2
614
615 /* Values for vcpu->arch.io_gpr */
616 #define KVM_MMIO_REG_MASK 0x001f
617 #define KVM_MMIO_REG_EXT_MASK 0xffe0
618 #define KVM_MMIO_REG_GPR 0x0000
619 #define KVM_MMIO_REG_FPR 0x0020
620 #define KVM_MMIO_REG_QPR 0x0040
621 #define KVM_MMIO_REG_FQPR 0x0060
622
623 #define __KVM_HAVE_ARCH_WQP
624 #define __KVM_HAVE_CREATE_DEVICE
625
626 #endif /* __POWERPC_KVM_HOST_H__ */
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