1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  * Copyright IBM Corp. 2007
5  *
6  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7  */
8 
9 #ifndef __POWERPC_KVM_HOST_H__
10 #define __POWERPC_KVM_HOST_H__
11 
12 #include <linux/mutex.h>
13 #include <linux/hrtimer.h>
14 #include <linux/interrupt.h>
15 #include <linux/types.h>
16 #include <linux/kvm_types.h>
17 #include <linux/threads.h>
18 #include <linux/spinlock.h>
19 #include <linux/kvm_para.h>
20 #include <linux/list.h>
21 #include <linux/atomic.h>
22 #include <asm/kvm_asm.h>
23 #include <asm/processor.h>
24 #include <asm/page.h>
25 #include <asm/cacheflush.h>
26 #include <asm/hvcall.h>
27 #include <asm/mce.h>
28 
29 #define __KVM_HAVE_ARCH_VCPU_DEBUGFS
30 
31 #define KVM_MAX_VCPUS		NR_CPUS
32 #define KVM_MAX_VCORES		NR_CPUS
33 
34 #include <asm/cputhreads.h>
35 
36 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
37 #include <asm/kvm_book3s_asm.h>		/* for MAX_SMT_THREADS */
38 #define KVM_MAX_VCPU_IDS	(MAX_SMT_THREADS * KVM_MAX_VCORES)
39 
40 /*
41  * Limit the nested partition table to 4096 entries (because that's what
42  * hardware supports). Both guest and host use this value.
43  */
44 #define KVM_MAX_NESTED_GUESTS_SHIFT	12
45 
46 #else
47 #define KVM_MAX_VCPU_IDS	KVM_MAX_VCPUS
48 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
49 
50 #define __KVM_HAVE_ARCH_INTC_INITIALIZED
51 
52 #define KVM_HALT_POLL_NS_DEFAULT 10000	/* 10 us */
53 
54 /* These values are internal and can be increased later */
55 #define KVM_NR_IRQCHIPS          1
56 #define KVM_IRQCHIP_NUM_PINS     256
57 
58 /* PPC-specific vcpu->requests bit members */
59 #define KVM_REQ_WATCHDOG	KVM_ARCH_REQ(0)
60 #define KVM_REQ_EPR_EXIT	KVM_ARCH_REQ(1)
61 #define KVM_REQ_PENDING_TIMER	KVM_ARCH_REQ(2)
62 
63 #include <linux/mmu_notifier.h>
64 
65 #define KVM_ARCH_WANT_MMU_NOTIFIER
66 
67 #define HPTEG_CACHE_NUM			(1 << 15)
68 #define HPTEG_HASH_BITS_PTE		13
69 #define HPTEG_HASH_BITS_PTE_LONG	12
70 #define HPTEG_HASH_BITS_VPTE		13
71 #define HPTEG_HASH_BITS_VPTE_LONG	5
72 #define HPTEG_HASH_BITS_VPTE_64K	11
73 #define HPTEG_HASH_NUM_PTE		(1 << HPTEG_HASH_BITS_PTE)
74 #define HPTEG_HASH_NUM_PTE_LONG		(1 << HPTEG_HASH_BITS_PTE_LONG)
75 #define HPTEG_HASH_NUM_VPTE		(1 << HPTEG_HASH_BITS_VPTE)
76 #define HPTEG_HASH_NUM_VPTE_LONG	(1 << HPTEG_HASH_BITS_VPTE_LONG)
77 #define HPTEG_HASH_NUM_VPTE_64K		(1 << HPTEG_HASH_BITS_VPTE_64K)
78 
79 /* Physical Address Mask - allowed range of real mode RAM access */
80 #define KVM_PAM			0x0fffffffffffffffULL
81 
82 struct lppaca;
83 struct slb_shadow;
84 struct dtl_entry;
85 
86 struct kvmppc_vcpu_book3s;
87 struct kvmppc_book3s_shadow_vcpu;
88 struct kvm_nested_guest;
89 
90 struct kvm_vm_stat {
91 	struct kvm_vm_stat_generic generic;
92 	u64 num_2M_pages;
93 	u64 num_1G_pages;
94 };
95 
96 struct kvm_vcpu_stat {
97 	struct kvm_vcpu_stat_generic generic;
98 	u64 sum_exits;
99 	u64 mmio_exits;
100 	u64 signal_exits;
101 	u64 light_exits;
102 	/* Account for special types of light exits: */
103 	u64 itlb_real_miss_exits;
104 	u64 itlb_virt_miss_exits;
105 	u64 dtlb_real_miss_exits;
106 	u64 dtlb_virt_miss_exits;
107 	u64 syscall_exits;
108 	u64 isi_exits;
109 	u64 dsi_exits;
110 	u64 emulated_inst_exits;
111 	u64 dec_exits;
112 	u64 ext_intr_exits;
113 	u64 halt_successful_wait;
114 	u64 dbell_exits;
115 	u64 gdbell_exits;
116 	u64 ld;
117 	u64 st;
118 #ifdef CONFIG_PPC_BOOK3S
119 	u64 pf_storage;
120 	u64 pf_instruc;
121 	u64 sp_storage;
122 	u64 sp_instruc;
123 	u64 queue_intr;
124 	u64 ld_slow;
125 	u64 st_slow;
126 #endif
127 	u64 pthru_all;
128 	u64 pthru_host;
129 	u64 pthru_bad_aff;
130 };
131 
132 enum kvm_exit_types {
133 	MMIO_EXITS,
134 	SIGNAL_EXITS,
135 	ITLB_REAL_MISS_EXITS,
136 	ITLB_VIRT_MISS_EXITS,
137 	DTLB_REAL_MISS_EXITS,
138 	DTLB_VIRT_MISS_EXITS,
139 	SYSCALL_EXITS,
140 	ISI_EXITS,
141 	DSI_EXITS,
142 	EMULATED_INST_EXITS,
143 	EMULATED_MTMSRWE_EXITS,
144 	EMULATED_WRTEE_EXITS,
145 	EMULATED_MTSPR_EXITS,
146 	EMULATED_MFSPR_EXITS,
147 	EMULATED_MTMSR_EXITS,
148 	EMULATED_MFMSR_EXITS,
149 	EMULATED_TLBSX_EXITS,
150 	EMULATED_TLBWE_EXITS,
151 	EMULATED_RFI_EXITS,
152 	EMULATED_RFCI_EXITS,
153 	EMULATED_RFDI_EXITS,
154 	DEC_EXITS,
155 	EXT_INTR_EXITS,
156 	HALT_WAKEUP,
157 	USR_PR_INST,
158 	FP_UNAVAIL,
159 	DEBUG_EXITS,
160 	TIMEINGUEST,
161 	DBELL_EXITS,
162 	GDBELL_EXITS,
163 	__NUMBER_OF_KVM_EXIT_TYPES
164 };
165 
166 /* allow access to big endian 32bit upper/lower parts and 64bit var */
167 struct kvmppc_exit_timing {
168 	union {
169 		u64 tv64;
170 		struct {
171 			u32 tbu, tbl;
172 		} tv32;
173 	};
174 };
175 
176 struct kvmppc_pginfo {
177 	unsigned long pfn;
178 	atomic_t refcnt;
179 };
180 
181 struct kvmppc_spapr_tce_iommu_table {
182 	struct rcu_head rcu;
183 	struct list_head next;
184 	struct iommu_table *tbl;
185 	struct kref kref;
186 };
187 
188 #define TCES_PER_PAGE	(PAGE_SIZE / sizeof(u64))
189 
190 struct kvmppc_spapr_tce_table {
191 	struct list_head list;
192 	struct kvm *kvm;
193 	u64 liobn;
194 	struct rcu_head rcu;
195 	u32 page_shift;
196 	u64 offset;		/* in pages */
197 	u64 size;		/* window size in pages */
198 	struct list_head iommu_tables;
199 	struct mutex alloc_lock;
200 	struct page *pages[];
201 };
202 
203 /* XICS components, defined in book3s_xics.c */
204 struct kvmppc_xics;
205 struct kvmppc_icp;
206 extern struct kvm_device_ops kvm_xics_ops;
207 
208 /* XIVE components, defined in book3s_xive.c */
209 struct kvmppc_xive;
210 struct kvmppc_xive_vcpu;
211 extern struct kvm_device_ops kvm_xive_ops;
212 extern struct kvm_device_ops kvm_xive_native_ops;
213 
214 struct kvmppc_passthru_irqmap;
215 
216 /*
217  * The reverse mapping array has one entry for each HPTE,
218  * which stores the guest's view of the second word of the HPTE
219  * (including the guest physical address of the mapping),
220  * plus forward and backward pointers in a doubly-linked ring
221  * of HPTEs that map the same host page.  The pointers in this
222  * ring are 32-bit HPTE indexes, to save space.
223  */
224 struct revmap_entry {
225 	unsigned long guest_rpte;
226 	unsigned int forw, back;
227 };
228 
229 /*
230  * The rmap array of size number of guest pages is allocated for each memslot.
231  * This array is used to store usage specific information about the guest page.
232  * Below are the encodings of the various possible usage types.
233  */
234 /* Free bits which can be used to define a new usage */
235 #define KVMPPC_RMAP_TYPE_MASK	0xff00000000000000
236 #define KVMPPC_RMAP_NESTED	0xc000000000000000	/* Nested rmap array */
237 #define KVMPPC_RMAP_HPT		0x0100000000000000	/* HPT guest */
238 
239 /*
240  * rmap usage definition for a hash page table (hpt) guest:
241  * 0x0000080000000000	Lock bit
242  * 0x0000018000000000	RC bits
243  * 0x0000000100000000	Present bit
244  * 0x00000000ffffffff	HPT index bits
245  * The bottom 32 bits are the index in the guest HPT of a HPTE that points to
246  * the page.
247  */
248 #define KVMPPC_RMAP_LOCK_BIT	43
249 #define KVMPPC_RMAP_RC_SHIFT	32
250 #define KVMPPC_RMAP_REFERENCED	(HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
251 #define KVMPPC_RMAP_PRESENT	0x100000000ul
252 #define KVMPPC_RMAP_INDEX	0xfffffffful
253 
254 struct kvm_arch_memory_slot {
255 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
256 	unsigned long *rmap;
257 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
258 };
259 
260 struct kvm_hpt_info {
261 	/* Host virtual (linear mapping) address of guest HPT */
262 	unsigned long virt;
263 	/* Array of reverse mapping entries for each guest HPTE */
264 	struct revmap_entry *rev;
265 	/* Guest HPT size is 2**(order) bytes */
266 	u32 order;
267 	/* 1 if HPT allocated with CMA, 0 otherwise */
268 	int cma;
269 };
270 
271 struct kvm_resize_hpt;
272 
273 /* Flag values for kvm_arch.secure_guest */
274 #define KVMPPC_SECURE_INIT_START 0x1 /* H_SVM_INIT_START has been called */
275 #define KVMPPC_SECURE_INIT_DONE  0x2 /* H_SVM_INIT_DONE completed */
276 #define KVMPPC_SECURE_INIT_ABORT 0x4 /* H_SVM_INIT_ABORT issued */
277 
278 struct kvm_arch {
279 	unsigned int lpid;
280 	unsigned int smt_mode;		/* # vcpus per virtual core */
281 	unsigned int emul_smt_mode;	/* emualted SMT mode, on P9 */
282 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
283 	unsigned int tlb_sets;
284 	struct kvm_hpt_info hpt;
285 	atomic64_t mmio_update;
286 	unsigned int host_lpid;
287 	unsigned long host_lpcr;
288 	unsigned long sdr1;
289 	unsigned long host_sdr1;
290 	unsigned long lpcr;
291 	unsigned long vrma_slb_v;
292 	int mmu_ready;
293 	atomic_t vcpus_running;
294 	u32 online_vcores;
295 	atomic_t hpte_mod_interest;
296 	cpumask_t need_tlb_flush;
297 	u8 radix;
298 	u8 fwnmi_enabled;
299 	u8 secure_guest;
300 	u8 svm_enabled;
301 	bool nested_enable;
302 	bool dawr1_enabled;
303 	pgd_t *pgtable;
304 	u64 process_table;
305 	struct kvm_resize_hpt *resize_hpt; /* protected by kvm->lock */
306 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
307 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
308 	struct mutex hpt_mutex;
309 #endif
310 #ifdef CONFIG_PPC_BOOK3S_64
311 	struct list_head spapr_tce_tables;
312 	struct list_head rtas_tokens;
313 	struct mutex rtas_token_lock;
314 	DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
315 #endif
316 #ifdef CONFIG_KVM_MPIC
317 	struct openpic *mpic;
318 #endif
319 #ifdef CONFIG_KVM_XICS
320 	struct kvmppc_xics *xics;
321 	struct kvmppc_xics *xics_device;
322 	struct kvmppc_xive *xive;    /* Current XIVE device in use */
323 	struct {
324 		struct kvmppc_xive *native;
325 		struct kvmppc_xive *xics_on_xive;
326 	} xive_devices;
327 	struct kvmppc_passthru_irqmap *pimap;
328 #endif
329 	struct kvmppc_ops *kvm_ops;
330 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
331 	struct mutex uvmem_lock;
332 	struct list_head uvmem_pfns;
333 	struct mutex mmu_setup_lock;	/* nests inside vcpu mutexes */
334 	u64 l1_ptcr;
335 	struct idr kvm_nested_guest_idr;
336 	/* This array can grow quite large, keep it at the end */
337 	struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
338 #endif
339 };
340 
341 #define VCORE_ENTRY_MAP(vc)	((vc)->entry_exit_map & 0xff)
342 #define VCORE_EXIT_MAP(vc)	((vc)->entry_exit_map >> 8)
343 #define VCORE_IS_EXITING(vc)	(VCORE_EXIT_MAP(vc) != 0)
344 
345 /* This bit is used when a vcore exit is triggered from outside the vcore */
346 #define VCORE_EXIT_REQ		0x10000
347 
348 /*
349  * Values for vcore_state.
350  * Note that these are arranged such that lower values
351  * (< VCORE_SLEEPING) don't require stolen time accounting
352  * on load/unload, and higher values do.
353  */
354 #define VCORE_INACTIVE	0
355 #define VCORE_PREEMPT	1
356 #define VCORE_PIGGYBACK	2
357 #define VCORE_SLEEPING	3
358 #define VCORE_RUNNING	4
359 #define VCORE_EXITING	5
360 #define VCORE_POLLING	6
361 
362 /*
363  * Struct used to manage memory for a virtual processor area
364  * registered by a PAPR guest.  There are three types of area
365  * that a guest can register.
366  */
367 struct kvmppc_vpa {
368 	unsigned long gpa;	/* Current guest phys addr */
369 	void *pinned_addr;	/* Address in kernel linear mapping */
370 	void *pinned_end;	/* End of region */
371 	unsigned long next_gpa;	/* Guest phys addr for update */
372 	unsigned long len;	/* Number of bytes required */
373 	u8 update_pending;	/* 1 => update pinned_addr from next_gpa */
374 	bool dirty;		/* true => area has been modified by kernel */
375 };
376 
377 struct kvmppc_pte {
378 	ulong eaddr;
379 	u64 vpage;
380 	ulong raddr;
381 	bool may_read		: 1;
382 	bool may_write		: 1;
383 	bool may_execute	: 1;
384 	unsigned long wimg;
385 	unsigned long rc;
386 	u8 page_size;		/* MMU_PAGE_xxx */
387 	u8 page_shift;
388 };
389 
390 struct kvmppc_mmu {
391 	/* book3s_64 only */
392 	void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
393 	u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
394 	u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
395 	int  (*slbfee)(struct kvm_vcpu *vcpu, gva_t eaddr, ulong *ret_slb);
396 	void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
397 	void (*slbia)(struct kvm_vcpu *vcpu);
398 	/* book3s */
399 	void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
400 	u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
401 	int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
402 		      struct kvmppc_pte *pte, bool data, bool iswrite);
403 	void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
404 	int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
405 	u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
406 	bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
407 };
408 
409 struct kvmppc_slb {
410 	u64 esid;
411 	u64 vsid;
412 	u64 orige;
413 	u64 origv;
414 	bool valid	: 1;
415 	bool Ks		: 1;
416 	bool Kp		: 1;
417 	bool nx		: 1;
418 	bool large	: 1;	/* PTEs are 16MB */
419 	bool tb		: 1;	/* 1TB segment */
420 	bool class	: 1;
421 	u8 base_page_size;	/* MMU_PAGE_xxx */
422 };
423 
424 /* Struct used to accumulate timing information in HV real mode code */
425 struct kvmhv_tb_accumulator {
426 	u64	seqcount;	/* used to synchronize access, also count * 2 */
427 	u64	tb_total;	/* total time in timebase ticks */
428 	u64	tb_min;		/* min time */
429 	u64	tb_max;		/* max time */
430 };
431 
432 #ifdef CONFIG_PPC_BOOK3S_64
433 struct kvmppc_irq_map {
434 	u32	r_hwirq;
435 	u32	v_hwirq;
436 	struct irq_desc *desc;
437 };
438 
439 #define	KVMPPC_PIRQ_MAPPED	1024
440 struct kvmppc_passthru_irqmap {
441 	int n_mapped;
442 	struct kvmppc_irq_map mapped[KVMPPC_PIRQ_MAPPED];
443 };
444 #endif
445 
446 # ifdef CONFIG_PPC_FSL_BOOK3E
447 #define KVMPPC_BOOKE_IAC_NUM	2
448 #define KVMPPC_BOOKE_DAC_NUM	2
449 # else
450 #define KVMPPC_BOOKE_IAC_NUM	4
451 #define KVMPPC_BOOKE_DAC_NUM	2
452 # endif
453 #define KVMPPC_BOOKE_MAX_IAC	4
454 #define KVMPPC_BOOKE_MAX_DAC	2
455 
456 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
457 #define KVMPPC_EPR_NONE		0 /* EPR not supported */
458 #define KVMPPC_EPR_USER		1 /* exit to userspace to fill EPR */
459 #define KVMPPC_EPR_KERNEL	2 /* in-kernel irqchip */
460 
461 #define KVMPPC_IRQ_DEFAULT	0
462 #define KVMPPC_IRQ_MPIC		1
463 #define KVMPPC_IRQ_XICS		2 /* Includes a XIVE option */
464 #define KVMPPC_IRQ_XIVE		3 /* XIVE native exploitation mode */
465 
466 #define MMIO_HPTE_CACHE_SIZE	4
467 
468 struct mmio_hpte_cache_entry {
469 	unsigned long hpte_v;
470 	unsigned long hpte_r;
471 	unsigned long rpte;
472 	unsigned long pte_index;
473 	unsigned long eaddr;
474 	unsigned long slb_v;
475 	long mmio_update;
476 	unsigned int slb_base_pshift;
477 };
478 
479 struct mmio_hpte_cache {
480 	struct mmio_hpte_cache_entry entry[MMIO_HPTE_CACHE_SIZE];
481 	unsigned int index;
482 };
483 
484 #define KVMPPC_VSX_COPY_NONE		0
485 #define KVMPPC_VSX_COPY_WORD		1
486 #define KVMPPC_VSX_COPY_DWORD		2
487 #define KVMPPC_VSX_COPY_DWORD_LOAD_DUMP	3
488 #define KVMPPC_VSX_COPY_WORD_LOAD_DUMP	4
489 
490 #define KVMPPC_VMX_COPY_BYTE		8
491 #define KVMPPC_VMX_COPY_HWORD		9
492 #define KVMPPC_VMX_COPY_WORD		10
493 #define KVMPPC_VMX_COPY_DWORD		11
494 
495 struct openpic;
496 
497 /* W0 and W1 of a XIVE thread management context */
498 union xive_tma_w01 {
499 	struct {
500 		u8	nsr;
501 		u8	cppr;
502 		u8	ipb;
503 		u8	lsmfb;
504 		u8	ack;
505 		u8	inc;
506 		u8	age;
507 		u8	pipr;
508 	};
509 	__be64 w01;
510 };
511 
512 struct kvm_vcpu_arch {
513 	ulong host_stack;
514 	u32 host_pid;
515 #ifdef CONFIG_PPC_BOOK3S
516 	struct kvmppc_slb slb[64];
517 	int slb_max;		/* 1 + index of last valid entry in slb[] */
518 	int slb_nr;		/* total number of entries in SLB */
519 	struct kvmppc_mmu mmu;
520 	struct kvmppc_vcpu_book3s *book3s;
521 #endif
522 #ifdef CONFIG_PPC_BOOK3S_32
523 	struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
524 #endif
525 
526 	struct pt_regs regs;
527 
528 	struct thread_fp_state fp;
529 
530 #ifdef CONFIG_SPE
531 	ulong evr[32];
532 	ulong spefscr;
533 	ulong host_spefscr;
534 	u64 acc;
535 #endif
536 #ifdef CONFIG_ALTIVEC
537 	struct thread_vr_state vr;
538 #endif
539 
540 #ifdef CONFIG_KVM_BOOKE_HV
541 	u32 host_mas4;
542 	u32 host_mas6;
543 	u32 shadow_epcr;
544 	u32 shadow_msrp;
545 	u32 eplc;
546 	u32 epsc;
547 	u32 oldpir;
548 #endif
549 
550 #if defined(CONFIG_BOOKE)
551 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
552 	u32 epcr;
553 #endif
554 #endif
555 
556 #ifdef CONFIG_PPC_BOOK3S
557 	/* For Gekko paired singles */
558 	u32 qpr[32];
559 #endif
560 
561 #ifdef CONFIG_PPC_BOOK3S
562 	ulong tar;
563 #endif
564 
565 #ifdef CONFIG_PPC_BOOK3S
566 	ulong hflags;
567 	ulong guest_owned_ext;
568 	ulong purr;
569 	ulong spurr;
570 	ulong ic;
571 	ulong dscr;
572 	ulong amr;
573 	ulong uamor;
574 	ulong iamr;
575 	u32 ctrl;
576 	u32 dabrx;
577 	ulong dabr;
578 	ulong dawr0;
579 	ulong dawrx0;
580 	ulong dawr1;
581 	ulong dawrx1;
582 	ulong ciabr;
583 	ulong cfar;
584 	ulong ppr;
585 	u32 pspb;
586 	u8 load_ebb;
587 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
588 	u8 load_tm;
589 #endif
590 	ulong fscr;
591 	ulong shadow_fscr;
592 	ulong ebbhr;
593 	ulong ebbrr;
594 	ulong bescr;
595 	ulong csigr;
596 	ulong tacr;
597 	ulong tcscr;
598 	ulong acop;
599 	ulong wort;
600 	ulong tid;
601 	ulong psscr;
602 	ulong hfscr;
603 	ulong shadow_srr1;
604 #endif
605 	u32 vrsave; /* also USPRG0 */
606 	u32 mmucr;
607 	/* shadow_msr is unused for BookE HV */
608 	ulong shadow_msr;
609 	ulong csrr0;
610 	ulong csrr1;
611 	ulong dsrr0;
612 	ulong dsrr1;
613 	ulong mcsrr0;
614 	ulong mcsrr1;
615 	ulong mcsr;
616 	ulong dec;
617 #ifdef CONFIG_BOOKE
618 	u32 decar;
619 #endif
620 	/* Time base value when we entered the guest */
621 	u64 entry_tb;
622 	u64 entry_vtb;
623 	u64 entry_ic;
624 	u32 tcr;
625 	ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
626 	u32 ivor[64];
627 	ulong ivpr;
628 	u32 pvr;
629 
630 	u32 shadow_pid;
631 	u32 shadow_pid1;
632 	u32 pid;
633 	u32 swap_pid;
634 
635 	u32 ccr0;
636 	u32 ccr1;
637 	u32 dbsr;
638 
639 	u64 mmcr[4];	/* MMCR0, MMCR1, MMCR2, MMCR3 */
640 	u64 mmcra;
641 	u64 mmcrs;
642 	u32 pmc[8];
643 	u32 spmc[2];
644 	u64 siar;
645 	u64 sdar;
646 	u64 sier[3];
647 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
648 	u64 tfhar;
649 	u64 texasr;
650 	u64 tfiar;
651 	u64 orig_texasr;
652 
653 	u32 cr_tm;
654 	u64 xer_tm;
655 	u64 lr_tm;
656 	u64 ctr_tm;
657 	u64 amr_tm;
658 	u64 ppr_tm;
659 	u64 dscr_tm;
660 	u64 tar_tm;
661 
662 	ulong gpr_tm[32];
663 
664 	struct thread_fp_state fp_tm;
665 
666 	struct thread_vr_state vr_tm;
667 	u32 vrsave_tm; /* also USPRG0 */
668 #endif
669 
670 #ifdef CONFIG_KVM_EXIT_TIMING
671 	struct mutex exit_timing_lock;
672 	struct kvmppc_exit_timing timing_exit;
673 	struct kvmppc_exit_timing timing_last_enter;
674 	u32 last_exit_type;
675 	u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
676 	u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
677 	u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
678 	u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
679 	u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
680 	u64 timing_last_exit;
681 #endif
682 
683 #ifdef CONFIG_PPC_BOOK3S
684 	ulong fault_dar;
685 	u32 fault_dsisr;
686 	unsigned long intr_msr;
687 	/*
688 	 * POWER9 and later: fault_gpa contains the guest real address of page
689 	 * fault for a radix guest, or segment descriptor (equivalent to result
690 	 * from slbmfev of SLB entry that translated the EA) for hash guests.
691 	 */
692 	ulong fault_gpa;
693 #endif
694 
695 #ifdef CONFIG_BOOKE
696 	ulong fault_dear;
697 	ulong fault_esr;
698 	ulong queued_dear;
699 	ulong queued_esr;
700 	spinlock_t wdt_lock;
701 	struct timer_list wdt_timer;
702 	u32 tlbcfg[4];
703 	u32 tlbps[4];
704 	u32 mmucfg;
705 	u32 eptcfg;
706 	u32 epr;
707 	u64 sprg9;
708 	u32 pwrmgtcr0;
709 	u32 crit_save;
710 	/* guest debug registers*/
711 	struct debug_reg dbg_reg;
712 #endif
713 	gpa_t paddr_accessed;
714 	gva_t vaddr_accessed;
715 	pgd_t *pgdir;
716 
717 	u16 io_gpr; /* GPR used as IO source/target */
718 	u8 mmio_host_swabbed;
719 	u8 mmio_sign_extend;
720 	/* conversion between single and double precision */
721 	u8 mmio_sp64_extend;
722 	/*
723 	 * Number of simulations for vsx.
724 	 * If we use 2*8bytes to simulate 1*16bytes,
725 	 * then the number should be 2 and
726 	 * mmio_copy_type=KVMPPC_VSX_COPY_DWORD.
727 	 * If we use 4*4bytes to simulate 1*16bytes,
728 	 * the number should be 4 and
729 	 * mmio_vsx_copy_type=KVMPPC_VSX_COPY_WORD.
730 	 */
731 	u8 mmio_vsx_copy_nums;
732 	u8 mmio_vsx_offset;
733 	u8 mmio_vmx_copy_nums;
734 	u8 mmio_vmx_offset;
735 	u8 mmio_copy_type;
736 	u8 osi_needed;
737 	u8 osi_enabled;
738 	u8 papr_enabled;
739 	u8 watchdog_enabled;
740 	u8 sane;
741 	u8 cpu_type;
742 	u8 hcall_needed;
743 	u8 epr_flags; /* KVMPPC_EPR_xxx */
744 	u8 epr_needed;
745 	u8 external_oneshot;	/* clear external irq after delivery */
746 
747 	u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
748 
749 	struct hrtimer dec_timer;
750 	u64 dec_jiffies;
751 	u64 dec_expires;	/* Relative to guest timebase. */
752 	unsigned long pending_exceptions;
753 	u8 ceded;
754 	u8 prodded;
755 	u8 doorbell_request;
756 	u8 irq_pending; /* Used by XIVE to signal pending guest irqs */
757 	u32 last_inst;
758 
759 	struct rcuwait wait;
760 	struct rcuwait *waitp;
761 	struct kvmppc_vcore *vcore;
762 	int ret;
763 	int trap;
764 	int state;
765 	int ptid;
766 	int thread_cpu;
767 	int prev_cpu;
768 	bool timer_running;
769 	wait_queue_head_t cpu_run;
770 	struct machine_check_event mce_evt; /* Valid if trap == 0x200 */
771 
772 	struct kvm_vcpu_arch_shared *shared;
773 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
774 	bool shared_big_endian;
775 #endif
776 	unsigned long magic_page_pa; /* phys addr to map the magic page to */
777 	unsigned long magic_page_ea; /* effect. addr to map the magic page to */
778 	bool disable_kernel_nx;
779 
780 	int irq_type;		/* one of KVM_IRQ_* */
781 	int irq_cpu_id;
782 	struct openpic *mpic;	/* KVM_IRQ_MPIC */
783 #ifdef CONFIG_KVM_XICS
784 	struct kvmppc_icp *icp; /* XICS presentation controller */
785 	struct kvmppc_xive_vcpu *xive_vcpu; /* XIVE virtual CPU data */
786 	__be32 xive_cam_word;    /* Cooked W2 in proper endian with valid bit */
787 	u8 xive_pushed;		 /* Is the VP pushed on the physical CPU ? */
788 	u8 xive_esc_on;		 /* Is the escalation irq enabled ? */
789 	union xive_tma_w01 xive_saved_state; /* W0..1 of XIVE thread state */
790 	u64 xive_esc_raddr;	 /* Escalation interrupt ESB real addr */
791 	u64 xive_esc_vaddr;	 /* Escalation interrupt ESB virt addr */
792 #endif
793 
794 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
795 	struct kvm_vcpu_arch_shared shregs;
796 
797 	struct mmio_hpte_cache mmio_cache;
798 	unsigned long pgfault_addr;
799 	long pgfault_index;
800 	unsigned long pgfault_hpte[2];
801 	struct mmio_hpte_cache_entry *pgfault_cache;
802 
803 	struct task_struct *run_task;
804 
805 	spinlock_t vpa_update_lock;
806 	struct kvmppc_vpa vpa;
807 	struct kvmppc_vpa dtl;
808 	struct dtl_entry *dtl_ptr;
809 	unsigned long dtl_index;
810 	u64 stolen_logged;
811 	struct kvmppc_vpa slb_shadow;
812 
813 	spinlock_t tbacct_lock;
814 	u64 busy_stolen;
815 	u64 busy_preempt;
816 
817 	u32 emul_inst;
818 
819 	u32 online;
820 
821 	u64 hfscr_permitted;	/* A mask of permitted HFSCR facilities */
822 
823 	/* For support of nested guests */
824 	struct kvm_nested_guest *nested;
825 	u64 nested_hfscr;	/* HFSCR that the L1 requested for the nested guest */
826 	u32 nested_vcpu_id;
827 	gpa_t nested_io_gpr;
828 #endif
829 
830 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
831 	struct kvmhv_tb_accumulator *cur_activity;	/* What we're timing */
832 	u64	cur_tb_start;			/* when it started */
833 	struct kvmhv_tb_accumulator rm_entry;	/* real-mode entry code */
834 	struct kvmhv_tb_accumulator rm_intr;	/* real-mode intr handling */
835 	struct kvmhv_tb_accumulator rm_exit;	/* real-mode exit code */
836 	struct kvmhv_tb_accumulator guest_time;	/* guest execution */
837 	struct kvmhv_tb_accumulator cede_time;	/* time napping inside guest */
838 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
839 };
840 
841 #define VCPU_FPR(vcpu, i)	(vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
842 #define VCPU_VSX_FPR(vcpu, i, j)	((vcpu)->arch.fp.fpr[i][j])
843 #define VCPU_VSX_VR(vcpu, i)		((vcpu)->arch.vr.vr[i])
844 
845 /* Values for vcpu->arch.state */
846 #define KVMPPC_VCPU_NOTREADY		0
847 #define KVMPPC_VCPU_RUNNABLE		1
848 #define KVMPPC_VCPU_BUSY_IN_HOST	2
849 
850 /* Values for vcpu->arch.io_gpr */
851 #define KVM_MMIO_REG_MASK	0x003f
852 #define KVM_MMIO_REG_EXT_MASK	0xffc0
853 #define KVM_MMIO_REG_GPR	0x0000
854 #define KVM_MMIO_REG_FPR	0x0040
855 #define KVM_MMIO_REG_QPR	0x0080
856 #define KVM_MMIO_REG_FQPR	0x00c0
857 #define KVM_MMIO_REG_VSX	0x0100
858 #define KVM_MMIO_REG_VMX	0x0180
859 #define KVM_MMIO_REG_NESTED_GPR	0xffc0
860 
861 
862 #define __KVM_HAVE_ARCH_WQP
863 #define __KVM_HAVE_CREATE_DEVICE
864 
kvm_arch_hardware_disable(void)865 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_hardware_unsetup(void)866 static inline void kvm_arch_hardware_unsetup(void) {}
kvm_arch_sync_events(struct kvm * kvm)867 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)868 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)869 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)870 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
kvm_arch_exit(void)871 static inline void kvm_arch_exit(void) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)872 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)873 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
874 
875 #endif /* __POWERPC_KVM_HOST_H__ */
876