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.
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.
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.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #ifndef __POWERPC_KVM_HOST_H__
21 #define __POWERPC_KVM_HOST_H__
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>
36 #include <asm/cacheflush.h>
37 #include <asm/hvcall.h>
39 #define KVM_MAX_VCPUS NR_CPUS
40 #define KVM_MAX_VCORES NR_CPUS
41 #define KVM_USER_MEM_SLOTS 512
43 #include <asm/cputhreads.h>
44 #define KVM_MAX_VCPU_ID (threads_per_subcore * KVM_MAX_VCORES)
46 #ifdef CONFIG_KVM_MMIO
47 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
49 #define KVM_HALT_POLL_NS_DEFAULT 500000
51 /* These values are internal and can be increased later */
52 #define KVM_NR_IRQCHIPS 1
53 #define KVM_IRQCHIP_NUM_PINS 256
55 /* PPC-specific vcpu->requests bit members */
56 #define KVM_REQ_WATCHDOG 8
57 #define KVM_REQ_EPR_EXIT 9
59 #include <linux/mmu_notifier.h>
61 #define KVM_ARCH_WANT_MMU_NOTIFIER
63 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
64 extern int kvm_unmap_hva_range(struct kvm *kvm,
65 unsigned long start, unsigned long end);
66 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
67 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
68 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
70 static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
71 unsigned long address)
75 #define HPTEG_CACHE_NUM (1 << 15)
76 #define HPTEG_HASH_BITS_PTE 13
77 #define HPTEG_HASH_BITS_PTE_LONG 12
78 #define HPTEG_HASH_BITS_VPTE 13
79 #define HPTEG_HASH_BITS_VPTE_LONG 5
80 #define HPTEG_HASH_BITS_VPTE_64K 11
81 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
82 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
83 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
84 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
85 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
87 /* Physical Address Mask - allowed range of real mode RAM access */
88 #define KVM_PAM 0x0fffffffffffffffULL
94 struct kvmppc_vcpu_book3s;
95 struct kvmppc_book3s_shadow_vcpu;
101 struct kvm_vcpu_stat {
106 /* Account for special types of light exits: */
107 u32 itlb_real_miss_exits;
108 u32 itlb_virt_miss_exits;
109 u32 dtlb_real_miss_exits;
110 u32 dtlb_virt_miss_exits;
114 u32 emulated_inst_exits;
117 u32 halt_successful_poll;
118 u32 halt_attempted_poll;
119 u32 halt_poll_invalid;
125 #ifdef CONFIG_PPC_BOOK3S
136 enum kvm_exit_types {
139 ITLB_REAL_MISS_EXITS,
140 ITLB_VIRT_MISS_EXITS,
141 DTLB_REAL_MISS_EXITS,
142 DTLB_VIRT_MISS_EXITS,
147 EMULATED_MTMSRWE_EXITS,
148 EMULATED_WRTEE_EXITS,
149 EMULATED_MTSPR_EXITS,
150 EMULATED_MFSPR_EXITS,
151 EMULATED_MTMSR_EXITS,
152 EMULATED_MFMSR_EXITS,
153 EMULATED_TLBSX_EXITS,
154 EMULATED_TLBWE_EXITS,
167 __NUMBER_OF_KVM_EXIT_TYPES
170 /* allow access to big endian 32bit upper/lower parts and 64bit var */
171 struct kvmppc_exit_timing {
180 struct kvmppc_pginfo {
185 struct kvmppc_spapr_tce_table {
186 struct list_head list;
191 u64 offset; /* in pages */
192 u64 size; /* window size in pages */
193 struct page *pages[0];
196 /* XICS components, defined in book3s_xics.c */
201 * The reverse mapping array has one entry for each HPTE,
202 * which stores the guest's view of the second word of the HPTE
203 * (including the guest physical address of the mapping),
204 * plus forward and backward pointers in a doubly-linked ring
205 * of HPTEs that map the same host page. The pointers in this
206 * ring are 32-bit HPTE indexes, to save space.
208 struct revmap_entry {
209 unsigned long guest_rpte;
210 unsigned int forw, back;
214 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
215 * and bit 32 as a present flag. The bottom 32 bits are the
216 * index in the guest HPT of a HPTE that points to the page.
218 #define KVMPPC_RMAP_LOCK_BIT 63
219 #define KVMPPC_RMAP_RC_SHIFT 32
220 #define KVMPPC_RMAP_CHG_SHIFT 48
221 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
222 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
223 #define KVMPPC_RMAP_CHG_ORDER (0x3ful << KVMPPC_RMAP_CHG_SHIFT)
224 #define KVMPPC_RMAP_PRESENT 0x100000000ul
225 #define KVMPPC_RMAP_INDEX 0xfffffffful
227 struct kvm_arch_memory_slot {
228 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
230 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
235 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
236 unsigned long hpt_virt;
237 struct revmap_entry *revmap;
238 unsigned int host_lpid;
239 unsigned long host_lpcr;
241 unsigned long host_sdr1;
244 unsigned long vrma_slb_v;
247 atomic_t vcpus_running;
249 unsigned long hpt_npte;
250 unsigned long hpt_mask;
251 atomic_t hpte_mod_interest;
252 cpumask_t need_tlb_flush;
254 struct dentry *debugfs_dir;
255 struct dentry *htab_dentry;
256 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
257 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
258 struct mutex hpt_mutex;
260 #ifdef CONFIG_PPC_BOOK3S_64
261 struct list_head spapr_tce_tables;
262 struct list_head rtas_tokens;
263 DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
265 #ifdef CONFIG_KVM_MPIC
266 struct openpic *mpic;
268 #ifdef CONFIG_KVM_XICS
269 struct kvmppc_xics *xics;
271 struct kvmppc_ops *kvm_ops;
272 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
273 /* This array can grow quite large, keep it at the end */
274 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
279 * Struct for a virtual core.
280 * Note: entry_exit_map combines a bitmap of threads that have entered
281 * in the bottom 8 bits and a bitmap of threads that have exited in the
282 * next 8 bits. This is so that we can atomically set the entry bit
283 * iff the exit map is 0 without taking a lock.
285 struct kvmppc_vcore {
295 struct kvmppc_vcore *master_vcore;
296 struct list_head runnable_threads;
297 struct list_head preempt_list;
299 struct swait_queue_head wq;
300 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
303 struct kvm_vcpu *runner;
305 u64 tb_offset; /* guest timebase - host timebase */
309 ulong dpdes; /* doorbell state (POWER8) */
310 ulong conferring_threads;
313 #define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff)
314 #define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8)
315 #define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0)
317 /* This bit is used when a vcore exit is triggered from outside the vcore */
318 #define VCORE_EXIT_REQ 0x10000
321 * Values for vcore_state.
322 * Note that these are arranged such that lower values
323 * (< VCORE_SLEEPING) don't require stolen time accounting
324 * on load/unload, and higher values do.
326 #define VCORE_INACTIVE 0
327 #define VCORE_PREEMPT 1
328 #define VCORE_PIGGYBACK 2
329 #define VCORE_SLEEPING 3
330 #define VCORE_RUNNING 4
331 #define VCORE_EXITING 5
334 * Struct used to manage memory for a virtual processor area
335 * registered by a PAPR guest. There are three types of area
336 * that a guest can register.
339 unsigned long gpa; /* Current guest phys addr */
340 void *pinned_addr; /* Address in kernel linear mapping */
341 void *pinned_end; /* End of region */
342 unsigned long next_gpa; /* Guest phys addr for update */
343 unsigned long len; /* Number of bytes required */
344 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
345 bool dirty; /* true => area has been modified by kernel */
354 bool may_execute : 1;
355 u8 page_size; /* MMU_PAGE_xxx */
360 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
361 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
362 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
363 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
364 void (*slbia)(struct kvm_vcpu *vcpu);
366 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
367 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
368 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
369 struct kvmppc_pte *pte, bool data, bool iswrite);
370 void (*reset_msr)(struct kvm_vcpu *vcpu);
371 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
372 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
373 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
374 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
386 bool large : 1; /* PTEs are 16MB */
387 bool tb : 1; /* 1TB segment */
389 u8 base_page_size; /* MMU_PAGE_xxx */
392 /* Struct used to accumulate timing information in HV real mode code */
393 struct kvmhv_tb_accumulator {
394 u64 seqcount; /* used to synchronize access, also count * 2 */
395 u64 tb_total; /* total time in timebase ticks */
396 u64 tb_min; /* min time */
397 u64 tb_max; /* max time */
400 # ifdef CONFIG_PPC_FSL_BOOK3E
401 #define KVMPPC_BOOKE_IAC_NUM 2
402 #define KVMPPC_BOOKE_DAC_NUM 2
404 #define KVMPPC_BOOKE_IAC_NUM 4
405 #define KVMPPC_BOOKE_DAC_NUM 2
407 #define KVMPPC_BOOKE_MAX_IAC 4
408 #define KVMPPC_BOOKE_MAX_DAC 2
410 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
411 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
412 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
413 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
415 #define KVMPPC_IRQ_DEFAULT 0
416 #define KVMPPC_IRQ_MPIC 1
417 #define KVMPPC_IRQ_XICS 2
421 struct kvm_vcpu_arch {
424 #ifdef CONFIG_PPC_BOOK3S
425 struct kvmppc_slb slb[64];
426 int slb_max; /* 1 + index of last valid entry in slb[] */
427 int slb_nr; /* total number of entries in SLB */
428 struct kvmppc_mmu mmu;
429 struct kvmppc_vcpu_book3s *book3s;
431 #ifdef CONFIG_PPC_BOOK3S_32
432 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
437 struct thread_fp_state fp;
445 #ifdef CONFIG_ALTIVEC
446 struct thread_vr_state vr;
449 #ifdef CONFIG_KVM_BOOKE_HV
459 #if defined(CONFIG_BOOKE)
460 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
465 #ifdef CONFIG_PPC_BOOK3S
466 /* For Gekko paired singles */
473 #ifdef CONFIG_PPC_BOOK3S
480 #ifdef CONFIG_PPC_BOOK3S
482 ulong guest_owned_ext;
512 u32 vrsave; /* also USPRG0 */
514 /* shadow_msr is unused for BookE HV */
527 /* Time base value when we entered the guest */
532 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
552 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
567 struct thread_fp_state fp_tm;
569 struct thread_vr_state vr_tm;
570 u32 vrsave_tm; /* also USPRG0 */
574 #ifdef CONFIG_KVM_EXIT_TIMING
575 struct mutex exit_timing_lock;
576 struct kvmppc_exit_timing timing_exit;
577 struct kvmppc_exit_timing timing_last_enter;
579 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
580 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
581 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
582 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
583 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
584 u64 timing_last_exit;
585 struct dentry *debugfs_exit_timing;
588 #ifdef CONFIG_PPC_BOOK3S
591 unsigned long intr_msr;
600 struct timer_list wdt_timer;
609 /* guest debug registers*/
610 struct debug_reg dbg_reg;
612 gpa_t paddr_accessed;
613 gva_t vaddr_accessed;
616 u8 io_gpr; /* GPR used as IO source/target */
617 u8 mmio_host_swabbed;
626 u8 epr_flags; /* KVMPPC_EPR_xxx */
629 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
631 struct hrtimer dec_timer;
634 unsigned long pending_exceptions;
639 struct swait_queue_head *wqp;
640 struct kvmppc_vcore *vcore;
647 wait_queue_head_t cpu_run;
649 struct kvm_vcpu_arch_shared *shared;
650 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
651 bool shared_big_endian;
653 unsigned long magic_page_pa; /* phys addr to map the magic page to */
654 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
655 bool disable_kernel_nx;
657 int irq_type; /* one of KVM_IRQ_* */
659 struct openpic *mpic; /* KVM_IRQ_MPIC */
660 #ifdef CONFIG_KVM_XICS
661 struct kvmppc_icp *icp; /* XICS presentation controller */
664 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
665 struct kvm_vcpu_arch_shared shregs;
667 unsigned long pgfault_addr;
669 unsigned long pgfault_hpte[2];
671 struct list_head run_list;
672 struct task_struct *run_task;
673 struct kvm_run *kvm_run;
675 spinlock_t vpa_update_lock;
676 struct kvmppc_vpa vpa;
677 struct kvmppc_vpa dtl;
678 struct dtl_entry *dtl_ptr;
679 unsigned long dtl_index;
681 struct kvmppc_vpa slb_shadow;
683 spinlock_t tbacct_lock;
690 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
691 struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */
692 u64 cur_tb_start; /* when it started */
693 struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */
694 struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */
695 struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */
696 struct kvmhv_tb_accumulator guest_time; /* guest execution */
697 struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */
699 struct dentry *debugfs_dir;
700 struct dentry *debugfs_timings;
701 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
704 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
706 /* Values for vcpu->arch.state */
707 #define KVMPPC_VCPU_NOTREADY 0
708 #define KVMPPC_VCPU_RUNNABLE 1
709 #define KVMPPC_VCPU_BUSY_IN_HOST 2
711 /* Values for vcpu->arch.io_gpr */
712 #define KVM_MMIO_REG_MASK 0x001f
713 #define KVM_MMIO_REG_EXT_MASK 0xffe0
714 #define KVM_MMIO_REG_GPR 0x0000
715 #define KVM_MMIO_REG_FPR 0x0020
716 #define KVM_MMIO_REG_QPR 0x0040
717 #define KVM_MMIO_REG_FQPR 0x0060
719 #define __KVM_HAVE_ARCH_WQP
720 #define __KVM_HAVE_CREATE_DEVICE
722 static inline void kvm_arch_hardware_disable(void) {}
723 static inline void kvm_arch_hardware_unsetup(void) {}
724 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
725 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
726 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
727 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
728 static inline void kvm_arch_exit(void) {}
729 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
730 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
731 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
733 #endif /* __POWERPC_KVM_HOST_H__ */