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 #define KVM_HALT_POLL_NS_DEFAULT 10000 /* 10 us */
50 /* These values are internal and can be increased later */
51 #define KVM_NR_IRQCHIPS 1
52 #define KVM_IRQCHIP_NUM_PINS 256
54 /* PPC-specific vcpu->requests bit members */
55 #define KVM_REQ_WATCHDOG 8
56 #define KVM_REQ_EPR_EXIT 9
58 #include <linux/mmu_notifier.h>
60 #define KVM_ARCH_WANT_MMU_NOTIFIER
62 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
63 extern int kvm_unmap_hva_range(struct kvm *kvm,
64 unsigned long start, unsigned long end);
65 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
66 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
67 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
69 static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
70 unsigned long address)
74 #define HPTEG_CACHE_NUM (1 << 15)
75 #define HPTEG_HASH_BITS_PTE 13
76 #define HPTEG_HASH_BITS_PTE_LONG 12
77 #define HPTEG_HASH_BITS_VPTE 13
78 #define HPTEG_HASH_BITS_VPTE_LONG 5
79 #define HPTEG_HASH_BITS_VPTE_64K 11
80 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
81 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
82 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
83 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
84 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
86 /* Physical Address Mask - allowed range of real mode RAM access */
87 #define KVM_PAM 0x0fffffffffffffffULL
93 struct kvmppc_vcpu_book3s;
94 struct kvmppc_book3s_shadow_vcpu;
97 ulong remote_tlb_flush;
100 struct kvm_vcpu_stat {
105 /* Account for special types of light exits: */
106 u64 itlb_real_miss_exits;
107 u64 itlb_virt_miss_exits;
108 u64 dtlb_real_miss_exits;
109 u64 dtlb_virt_miss_exits;
113 u64 emulated_inst_exits;
116 u64 halt_poll_success_ns;
117 u64 halt_poll_fail_ns;
119 u64 halt_successful_poll;
120 u64 halt_attempted_poll;
121 u64 halt_successful_wait;
122 u64 halt_poll_invalid;
128 #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_iommu_table {
193 struct list_head next;
194 struct iommu_table *tbl;
198 struct kvmppc_spapr_tce_table {
199 struct list_head list;
204 u64 offset; /* in pages */
205 u64 size; /* window size in pages */
206 struct list_head iommu_tables;
207 struct page *pages[0];
210 /* XICS components, defined in book3s_xics.c */
214 struct kvmppc_passthru_irqmap;
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.
224 struct revmap_entry {
225 unsigned long guest_rpte;
226 unsigned int forw, back;
230 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
231 * and bit 32 as a present flag. The bottom 32 bits are the
232 * index in the guest HPT of a HPTE that points to the page.
234 #define KVMPPC_RMAP_LOCK_BIT 63
235 #define KVMPPC_RMAP_RC_SHIFT 32
236 #define KVMPPC_RMAP_CHG_SHIFT 48
237 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
238 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
239 #define KVMPPC_RMAP_CHG_ORDER (0x3ful << KVMPPC_RMAP_CHG_SHIFT)
240 #define KVMPPC_RMAP_PRESENT 0x100000000ul
241 #define KVMPPC_RMAP_INDEX 0xfffffffful
243 struct kvm_arch_memory_slot {
244 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
246 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
249 struct kvm_hpt_info {
250 /* Host virtual (linear mapping) address of guest HPT */
252 /* Array of reverse mapping entries for each guest HPTE */
253 struct revmap_entry *rev;
254 /* Guest HPT size is 2**(order) bytes */
256 /* 1 if HPT allocated with CMA, 0 otherwise */
260 struct kvm_resize_hpt;
264 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
265 unsigned int tlb_sets;
266 struct kvm_hpt_info hpt;
267 atomic64_t mmio_update;
268 unsigned int host_lpid;
269 unsigned long host_lpcr;
271 unsigned long host_sdr1;
274 unsigned long vrma_slb_v;
276 atomic_t vcpus_running;
278 atomic_t hpte_mod_interest;
279 cpumask_t need_tlb_flush;
280 cpumask_t cpu_in_guest;
284 struct dentry *debugfs_dir;
285 struct dentry *htab_dentry;
286 struct kvm_resize_hpt *resize_hpt; /* protected by kvm->lock */
287 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
288 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
289 struct mutex hpt_mutex;
291 #ifdef CONFIG_PPC_BOOK3S_64
292 struct list_head spapr_tce_tables;
293 struct list_head rtas_tokens;
294 DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
296 #ifdef CONFIG_KVM_MPIC
297 struct openpic *mpic;
299 #ifdef CONFIG_KVM_XICS
300 struct kvmppc_xics *xics;
301 struct kvmppc_passthru_irqmap *pimap;
303 struct kvmppc_ops *kvm_ops;
304 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
305 /* This array can grow quite large, keep it at the end */
306 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
310 #define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff)
311 #define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8)
312 #define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0)
314 /* This bit is used when a vcore exit is triggered from outside the vcore */
315 #define VCORE_EXIT_REQ 0x10000
318 * Values for vcore_state.
319 * Note that these are arranged such that lower values
320 * (< VCORE_SLEEPING) don't require stolen time accounting
321 * on load/unload, and higher values do.
323 #define VCORE_INACTIVE 0
324 #define VCORE_PREEMPT 1
325 #define VCORE_PIGGYBACK 2
326 #define VCORE_SLEEPING 3
327 #define VCORE_RUNNING 4
328 #define VCORE_EXITING 5
329 #define VCORE_POLLING 6
332 * Struct used to manage memory for a virtual processor area
333 * registered by a PAPR guest. There are three types of area
334 * that a guest can register.
337 unsigned long gpa; /* Current guest phys addr */
338 void *pinned_addr; /* Address in kernel linear mapping */
339 void *pinned_end; /* End of region */
340 unsigned long next_gpa; /* Guest phys addr for update */
341 unsigned long len; /* Number of bytes required */
342 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
343 bool dirty; /* true => area has been modified by kernel */
352 bool may_execute : 1;
354 u8 page_size; /* MMU_PAGE_xxx */
359 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
360 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
361 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
362 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
363 void (*slbia)(struct kvm_vcpu *vcpu);
365 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
366 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
367 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
368 struct kvmppc_pte *pte, bool data, bool iswrite);
369 void (*reset_msr)(struct kvm_vcpu *vcpu);
370 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
371 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
372 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
373 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
385 bool large : 1; /* PTEs are 16MB */
386 bool tb : 1; /* 1TB segment */
388 u8 base_page_size; /* MMU_PAGE_xxx */
391 /* Struct used to accumulate timing information in HV real mode code */
392 struct kvmhv_tb_accumulator {
393 u64 seqcount; /* used to synchronize access, also count * 2 */
394 u64 tb_total; /* total time in timebase ticks */
395 u64 tb_min; /* min time */
396 u64 tb_max; /* max time */
399 #ifdef CONFIG_PPC_BOOK3S_64
400 struct kvmppc_irq_map {
403 struct irq_desc *desc;
406 #define KVMPPC_PIRQ_MAPPED 1024
407 struct kvmppc_passthru_irqmap {
409 struct kvmppc_irq_map mapped[KVMPPC_PIRQ_MAPPED];
413 # ifdef CONFIG_PPC_FSL_BOOK3E
414 #define KVMPPC_BOOKE_IAC_NUM 2
415 #define KVMPPC_BOOKE_DAC_NUM 2
417 #define KVMPPC_BOOKE_IAC_NUM 4
418 #define KVMPPC_BOOKE_DAC_NUM 2
420 #define KVMPPC_BOOKE_MAX_IAC 4
421 #define KVMPPC_BOOKE_MAX_DAC 2
423 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
424 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
425 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
426 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
428 #define KVMPPC_IRQ_DEFAULT 0
429 #define KVMPPC_IRQ_MPIC 1
430 #define KVMPPC_IRQ_XICS 2
432 #define MMIO_HPTE_CACHE_SIZE 4
434 struct mmio_hpte_cache_entry {
435 unsigned long hpte_v;
436 unsigned long hpte_r;
438 unsigned long pte_index;
442 unsigned int slb_base_pshift;
445 struct mmio_hpte_cache {
446 struct mmio_hpte_cache_entry entry[MMIO_HPTE_CACHE_SIZE];
450 #define KVMPPC_VSX_COPY_NONE 0
451 #define KVMPPC_VSX_COPY_WORD 1
452 #define KVMPPC_VSX_COPY_DWORD 2
453 #define KVMPPC_VSX_COPY_DWORD_LOAD_DUMP 3
457 struct kvm_vcpu_arch {
460 #ifdef CONFIG_PPC_BOOK3S
461 struct kvmppc_slb slb[64];
462 int slb_max; /* 1 + index of last valid entry in slb[] */
463 int slb_nr; /* total number of entries in SLB */
464 struct kvmppc_mmu mmu;
465 struct kvmppc_vcpu_book3s *book3s;
467 #ifdef CONFIG_PPC_BOOK3S_32
468 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
473 struct thread_fp_state fp;
481 #ifdef CONFIG_ALTIVEC
482 struct thread_vr_state vr;
485 #ifdef CONFIG_KVM_BOOKE_HV
495 #if defined(CONFIG_BOOKE)
496 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
501 #ifdef CONFIG_PPC_BOOK3S
502 /* For Gekko paired singles */
509 #ifdef CONFIG_PPC_BOOK3S
516 #ifdef CONFIG_PPC_BOOK3S
518 ulong guest_owned_ext;
549 u32 vrsave; /* also USPRG0 */
551 /* shadow_msr is unused for BookE HV */
564 /* Time base value when we entered the guest */
569 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
589 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
605 struct thread_fp_state fp_tm;
607 struct thread_vr_state vr_tm;
608 u32 vrsave_tm; /* also USPRG0 */
612 #ifdef CONFIG_KVM_EXIT_TIMING
613 struct mutex exit_timing_lock;
614 struct kvmppc_exit_timing timing_exit;
615 struct kvmppc_exit_timing timing_last_enter;
617 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
618 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
619 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
620 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
621 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
622 u64 timing_last_exit;
623 struct dentry *debugfs_exit_timing;
626 #ifdef CONFIG_PPC_BOOK3S
629 unsigned long intr_msr;
630 ulong fault_gpa; /* guest real address of page fault (POWER9) */
639 struct timer_list wdt_timer;
648 /* guest debug registers*/
649 struct debug_reg dbg_reg;
651 gpa_t paddr_accessed;
652 gva_t vaddr_accessed;
655 u8 io_gpr; /* GPR used as IO source/target */
656 u8 mmio_host_swabbed;
658 /* conversion between single and double precision */
661 * Number of simulations for vsx.
662 * If we use 2*8bytes to simulate 1*16bytes,
663 * then the number should be 2 and
664 * mmio_vsx_copy_type=KVMPPC_VSX_COPY_DWORD.
665 * If we use 4*4bytes to simulate 1*16bytes,
666 * the number should be 4 and
667 * mmio_vsx_copy_type=KVMPPC_VSX_COPY_WORD.
669 u8 mmio_vsx_copy_nums;
671 u8 mmio_vsx_copy_type;
672 u8 mmio_vsx_tx_sx_enabled;
680 u8 epr_flags; /* KVMPPC_EPR_xxx */
683 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
685 struct hrtimer dec_timer;
688 unsigned long pending_exceptions;
693 struct swait_queue_head *wqp;
694 struct kvmppc_vcore *vcore;
702 wait_queue_head_t cpu_run;
704 struct kvm_vcpu_arch_shared *shared;
705 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
706 bool shared_big_endian;
708 unsigned long magic_page_pa; /* phys addr to map the magic page to */
709 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
710 bool disable_kernel_nx;
712 int irq_type; /* one of KVM_IRQ_* */
714 struct openpic *mpic; /* KVM_IRQ_MPIC */
715 #ifdef CONFIG_KVM_XICS
716 struct kvmppc_icp *icp; /* XICS presentation controller */
719 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
720 struct kvm_vcpu_arch_shared shregs;
722 struct mmio_hpte_cache mmio_cache;
723 unsigned long pgfault_addr;
725 unsigned long pgfault_hpte[2];
726 struct mmio_hpte_cache_entry *pgfault_cache;
728 struct task_struct *run_task;
729 struct kvm_run *kvm_run;
731 spinlock_t vpa_update_lock;
732 struct kvmppc_vpa vpa;
733 struct kvmppc_vpa dtl;
734 struct dtl_entry *dtl_ptr;
735 unsigned long dtl_index;
737 struct kvmppc_vpa slb_shadow;
739 spinlock_t tbacct_lock;
746 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
747 struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */
748 u64 cur_tb_start; /* when it started */
749 struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */
750 struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */
751 struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */
752 struct kvmhv_tb_accumulator guest_time; /* guest execution */
753 struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */
755 struct dentry *debugfs_dir;
756 struct dentry *debugfs_timings;
757 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
760 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
761 #define VCPU_VSX_FPR(vcpu, i, j) ((vcpu)->arch.fp.fpr[i][j])
762 #define VCPU_VSX_VR(vcpu, i) ((vcpu)->arch.vr.vr[i])
764 /* Values for vcpu->arch.state */
765 #define KVMPPC_VCPU_NOTREADY 0
766 #define KVMPPC_VCPU_RUNNABLE 1
767 #define KVMPPC_VCPU_BUSY_IN_HOST 2
769 /* Values for vcpu->arch.io_gpr */
770 #define KVM_MMIO_REG_MASK 0x001f
771 #define KVM_MMIO_REG_EXT_MASK 0xffe0
772 #define KVM_MMIO_REG_GPR 0x0000
773 #define KVM_MMIO_REG_FPR 0x0020
774 #define KVM_MMIO_REG_QPR 0x0040
775 #define KVM_MMIO_REG_FQPR 0x0060
776 #define KVM_MMIO_REG_VSX 0x0080
778 #define __KVM_HAVE_ARCH_WQP
779 #define __KVM_HAVE_CREATE_DEVICE
781 static inline void kvm_arch_hardware_disable(void) {}
782 static inline void kvm_arch_hardware_unsetup(void) {}
783 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
784 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
785 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
786 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
787 static inline void kvm_arch_exit(void) {}
788 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
789 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
790 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
792 #endif /* __POWERPC_KVM_HOST_H__ */