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 #define __KVM_HAVE_ARCH_INTC_INITIALIZED
48 #ifdef CONFIG_KVM_MMIO
49 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
51 #define KVM_HALT_POLL_NS_DEFAULT 500000
53 /* These values are internal and can be increased later */
54 #define KVM_NR_IRQCHIPS 1
55 #define KVM_IRQCHIP_NUM_PINS 256
57 /* PPC-specific vcpu->requests bit members */
58 #define KVM_REQ_WATCHDOG 8
59 #define KVM_REQ_EPR_EXIT 9
61 #include <linux/mmu_notifier.h>
63 #define KVM_ARCH_WANT_MMU_NOTIFIER
65 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
66 extern int kvm_unmap_hva_range(struct kvm *kvm,
67 unsigned long start, unsigned long end);
68 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
69 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
70 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
72 static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
73 unsigned long address)
77 #define HPTEG_CACHE_NUM (1 << 15)
78 #define HPTEG_HASH_BITS_PTE 13
79 #define HPTEG_HASH_BITS_PTE_LONG 12
80 #define HPTEG_HASH_BITS_VPTE 13
81 #define HPTEG_HASH_BITS_VPTE_LONG 5
82 #define HPTEG_HASH_BITS_VPTE_64K 11
83 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
84 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
85 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
86 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
87 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
89 /* Physical Address Mask - allowed range of real mode RAM access */
90 #define KVM_PAM 0x0fffffffffffffffULL
96 struct kvmppc_vcpu_book3s;
97 struct kvmppc_book3s_shadow_vcpu;
100 ulong remote_tlb_flush;
103 struct kvm_vcpu_stat {
108 /* Account for special types of light exits: */
109 u64 itlb_real_miss_exits;
110 u64 itlb_virt_miss_exits;
111 u64 dtlb_real_miss_exits;
112 u64 dtlb_virt_miss_exits;
116 u64 emulated_inst_exits;
119 u64 halt_poll_success_ns;
120 u64 halt_poll_fail_ns;
122 u64 halt_successful_poll;
123 u64 halt_attempted_poll;
124 u64 halt_successful_wait;
125 u64 halt_poll_invalid;
131 #ifdef CONFIG_PPC_BOOK3S
142 enum kvm_exit_types {
145 ITLB_REAL_MISS_EXITS,
146 ITLB_VIRT_MISS_EXITS,
147 DTLB_REAL_MISS_EXITS,
148 DTLB_VIRT_MISS_EXITS,
153 EMULATED_MTMSRWE_EXITS,
154 EMULATED_WRTEE_EXITS,
155 EMULATED_MTSPR_EXITS,
156 EMULATED_MFSPR_EXITS,
157 EMULATED_MTMSR_EXITS,
158 EMULATED_MFMSR_EXITS,
159 EMULATED_TLBSX_EXITS,
160 EMULATED_TLBWE_EXITS,
173 __NUMBER_OF_KVM_EXIT_TYPES
176 /* allow access to big endian 32bit upper/lower parts and 64bit var */
177 struct kvmppc_exit_timing {
186 struct kvmppc_pginfo {
191 struct kvmppc_spapr_tce_table {
192 struct list_head list;
197 u64 offset; /* in pages */
198 u64 size; /* window size in pages */
199 struct page *pages[0];
202 /* XICS components, defined in book3s_xics.c */
207 * The reverse mapping array has one entry for each HPTE,
208 * which stores the guest's view of the second word of the HPTE
209 * (including the guest physical address of the mapping),
210 * plus forward and backward pointers in a doubly-linked ring
211 * of HPTEs that map the same host page. The pointers in this
212 * ring are 32-bit HPTE indexes, to save space.
214 struct revmap_entry {
215 unsigned long guest_rpte;
216 unsigned int forw, back;
220 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
221 * and bit 32 as a present flag. The bottom 32 bits are the
222 * index in the guest HPT of a HPTE that points to the page.
224 #define KVMPPC_RMAP_LOCK_BIT 63
225 #define KVMPPC_RMAP_RC_SHIFT 32
226 #define KVMPPC_RMAP_CHG_SHIFT 48
227 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
228 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
229 #define KVMPPC_RMAP_CHG_ORDER (0x3ful << KVMPPC_RMAP_CHG_SHIFT)
230 #define KVMPPC_RMAP_PRESENT 0x100000000ul
231 #define KVMPPC_RMAP_INDEX 0xfffffffful
233 struct kvm_arch_memory_slot {
234 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
236 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
241 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
242 unsigned long hpt_virt;
243 struct revmap_entry *revmap;
244 unsigned int host_lpid;
245 unsigned long host_lpcr;
247 unsigned long host_sdr1;
250 unsigned long vrma_slb_v;
253 atomic_t vcpus_running;
255 unsigned long hpt_npte;
256 unsigned long hpt_mask;
257 atomic_t hpte_mod_interest;
258 cpumask_t need_tlb_flush;
260 struct dentry *debugfs_dir;
261 struct dentry *htab_dentry;
262 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
263 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
264 struct mutex hpt_mutex;
266 #ifdef CONFIG_PPC_BOOK3S_64
267 struct list_head spapr_tce_tables;
268 struct list_head rtas_tokens;
269 DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
271 #ifdef CONFIG_KVM_MPIC
272 struct openpic *mpic;
274 #ifdef CONFIG_KVM_XICS
275 struct kvmppc_xics *xics;
277 struct kvmppc_ops *kvm_ops;
278 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
279 /* This array can grow quite large, keep it at the end */
280 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
284 #define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff)
285 #define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8)
286 #define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0)
288 /* This bit is used when a vcore exit is triggered from outside the vcore */
289 #define VCORE_EXIT_REQ 0x10000
292 * Values for vcore_state.
293 * Note that these are arranged such that lower values
294 * (< VCORE_SLEEPING) don't require stolen time accounting
295 * on load/unload, and higher values do.
297 #define VCORE_INACTIVE 0
298 #define VCORE_PREEMPT 1
299 #define VCORE_PIGGYBACK 2
300 #define VCORE_SLEEPING 3
301 #define VCORE_RUNNING 4
302 #define VCORE_EXITING 5
303 #define VCORE_POLLING 6
306 * Struct used to manage memory for a virtual processor area
307 * registered by a PAPR guest. There are three types of area
308 * that a guest can register.
311 unsigned long gpa; /* Current guest phys addr */
312 void *pinned_addr; /* Address in kernel linear mapping */
313 void *pinned_end; /* End of region */
314 unsigned long next_gpa; /* Guest phys addr for update */
315 unsigned long len; /* Number of bytes required */
316 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
317 bool dirty; /* true => area has been modified by kernel */
326 bool may_execute : 1;
327 u8 page_size; /* MMU_PAGE_xxx */
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);
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,
341 struct kvmppc_pte *pte, bool data, bool iswrite);
342 void (*reset_msr)(struct kvm_vcpu *vcpu);
343 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
344 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
345 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
346 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
358 bool large : 1; /* PTEs are 16MB */
359 bool tb : 1; /* 1TB segment */
361 u8 base_page_size; /* MMU_PAGE_xxx */
364 /* Struct used to accumulate timing information in HV real mode code */
365 struct kvmhv_tb_accumulator {
366 u64 seqcount; /* used to synchronize access, also count * 2 */
367 u64 tb_total; /* total time in timebase ticks */
368 u64 tb_min; /* min time */
369 u64 tb_max; /* max time */
372 # ifdef CONFIG_PPC_FSL_BOOK3E
373 #define KVMPPC_BOOKE_IAC_NUM 2
374 #define KVMPPC_BOOKE_DAC_NUM 2
376 #define KVMPPC_BOOKE_IAC_NUM 4
377 #define KVMPPC_BOOKE_DAC_NUM 2
379 #define KVMPPC_BOOKE_MAX_IAC 4
380 #define KVMPPC_BOOKE_MAX_DAC 2
382 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
383 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
384 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
385 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
387 #define KVMPPC_IRQ_DEFAULT 0
388 #define KVMPPC_IRQ_MPIC 1
389 #define KVMPPC_IRQ_XICS 2
393 struct kvm_vcpu_arch {
396 #ifdef CONFIG_PPC_BOOK3S
397 struct kvmppc_slb slb[64];
398 int slb_max; /* 1 + index of last valid entry in slb[] */
399 int slb_nr; /* total number of entries in SLB */
400 struct kvmppc_mmu mmu;
401 struct kvmppc_vcpu_book3s *book3s;
403 #ifdef CONFIG_PPC_BOOK3S_32
404 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
409 struct thread_fp_state fp;
417 #ifdef CONFIG_ALTIVEC
418 struct thread_vr_state vr;
421 #ifdef CONFIG_KVM_BOOKE_HV
431 #if defined(CONFIG_BOOKE)
432 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
437 #ifdef CONFIG_PPC_BOOK3S
438 /* For Gekko paired singles */
445 #ifdef CONFIG_PPC_BOOK3S
452 #ifdef CONFIG_PPC_BOOK3S
454 ulong guest_owned_ext;
484 u32 vrsave; /* also USPRG0 */
486 /* shadow_msr is unused for BookE HV */
499 /* Time base value when we entered the guest */
504 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
524 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
539 struct thread_fp_state fp_tm;
541 struct thread_vr_state vr_tm;
542 u32 vrsave_tm; /* also USPRG0 */
546 #ifdef CONFIG_KVM_EXIT_TIMING
547 struct mutex exit_timing_lock;
548 struct kvmppc_exit_timing timing_exit;
549 struct kvmppc_exit_timing timing_last_enter;
551 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
552 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
553 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
554 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
555 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
556 u64 timing_last_exit;
557 struct dentry *debugfs_exit_timing;
560 #ifdef CONFIG_PPC_BOOK3S
563 unsigned long intr_msr;
572 struct timer_list wdt_timer;
581 /* guest debug registers*/
582 struct debug_reg dbg_reg;
584 gpa_t paddr_accessed;
585 gva_t vaddr_accessed;
588 u8 io_gpr; /* GPR used as IO source/target */
589 u8 mmio_host_swabbed;
598 u8 epr_flags; /* KVMPPC_EPR_xxx */
601 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
603 struct hrtimer dec_timer;
606 unsigned long pending_exceptions;
611 struct swait_queue_head *wqp;
612 struct kvmppc_vcore *vcore;
619 wait_queue_head_t cpu_run;
621 struct kvm_vcpu_arch_shared *shared;
622 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
623 bool shared_big_endian;
625 unsigned long magic_page_pa; /* phys addr to map the magic page to */
626 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
627 bool disable_kernel_nx;
629 int irq_type; /* one of KVM_IRQ_* */
631 struct openpic *mpic; /* KVM_IRQ_MPIC */
632 #ifdef CONFIG_KVM_XICS
633 struct kvmppc_icp *icp; /* XICS presentation controller */
636 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
637 struct kvm_vcpu_arch_shared shregs;
639 unsigned long pgfault_addr;
641 unsigned long pgfault_hpte[2];
643 struct task_struct *run_task;
644 struct kvm_run *kvm_run;
646 spinlock_t vpa_update_lock;
647 struct kvmppc_vpa vpa;
648 struct kvmppc_vpa dtl;
649 struct dtl_entry *dtl_ptr;
650 unsigned long dtl_index;
652 struct kvmppc_vpa slb_shadow;
654 spinlock_t tbacct_lock;
661 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
662 struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */
663 u64 cur_tb_start; /* when it started */
664 struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */
665 struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */
666 struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */
667 struct kvmhv_tb_accumulator guest_time; /* guest execution */
668 struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */
670 struct dentry *debugfs_dir;
671 struct dentry *debugfs_timings;
672 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
675 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
677 /* Values for vcpu->arch.state */
678 #define KVMPPC_VCPU_NOTREADY 0
679 #define KVMPPC_VCPU_RUNNABLE 1
680 #define KVMPPC_VCPU_BUSY_IN_HOST 2
682 /* Values for vcpu->arch.io_gpr */
683 #define KVM_MMIO_REG_MASK 0x001f
684 #define KVM_MMIO_REG_EXT_MASK 0xffe0
685 #define KVM_MMIO_REG_GPR 0x0000
686 #define KVM_MMIO_REG_FPR 0x0020
687 #define KVM_MMIO_REG_QPR 0x0040
688 #define KVM_MMIO_REG_FQPR 0x0060
690 #define __KVM_HAVE_ARCH_WQP
691 #define __KVM_HAVE_CREATE_DEVICE
693 static inline void kvm_arch_hardware_disable(void) {}
694 static inline void kvm_arch_hardware_unsetup(void) {}
695 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
696 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
697 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
698 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
699 static inline void kvm_arch_exit(void) {}
700 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
701 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
702 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
704 #endif /* __POWERPC_KVM_HOST_H__ */