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>
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
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
47 /* These values are internal and can be increased later */
48 #define KVM_NR_IRQCHIPS 1
49 #define KVM_IRQCHIP_NUM_PINS 256
51 #if !defined(CONFIG_KVM_440)
52 #include <linux/mmu_notifier.h>
54 #define KVM_ARCH_WANT_MMU_NOTIFIER
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);
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_BITS_VPTE_64K 11
72 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
73 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
74 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
75 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
76 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
78 /* Physical Address Mask - allowed range of real mode RAM access */
79 #define KVM_PAM 0x0fffffffffffffffULL
89 struct kvmppc_vcpu_book3s;
90 struct kvmppc_book3s_shadow_vcpu;
96 struct kvm_vcpu_stat {
102 /* Account for special types of light exits: */
103 u32 itlb_real_miss_exits;
104 u32 itlb_virt_miss_exits;
105 u32 dtlb_real_miss_exits;
106 u32 dtlb_virt_miss_exits;
110 u32 emulated_inst_exits;
116 #ifdef CONFIG_PPC_BOOK3S
129 enum kvm_exit_types {
133 ITLB_REAL_MISS_EXITS,
134 ITLB_VIRT_MISS_EXITS,
135 DTLB_REAL_MISS_EXITS,
136 DTLB_VIRT_MISS_EXITS,
141 EMULATED_MTMSRWE_EXITS,
142 EMULATED_WRTEE_EXITS,
143 EMULATED_MTSPR_EXITS,
144 EMULATED_MFSPR_EXITS,
145 EMULATED_MTMSR_EXITS,
146 EMULATED_MFMSR_EXITS,
147 EMULATED_TLBSX_EXITS,
148 EMULATED_TLBWE_EXITS,
160 __NUMBER_OF_KVM_EXIT_TYPES
163 /* allow access to big endian 32bit upper/lower parts and 64bit var */
164 struct kvmppc_exit_timing {
173 struct kvmppc_pginfo {
178 struct kvmppc_spapr_tce_table {
179 struct list_head list;
183 struct page *pages[0];
186 struct kvm_rma_info {
188 unsigned long base_pfn;
191 /* XICS components, defined in book3s_xics.c */
196 * The reverse mapping array has one entry for each HPTE,
197 * which stores the guest's view of the second word of the HPTE
198 * (including the guest physical address of the mapping),
199 * plus forward and backward pointers in a doubly-linked ring
200 * of HPTEs that map the same host page. The pointers in this
201 * ring are 32-bit HPTE indexes, to save space.
203 struct revmap_entry {
204 unsigned long guest_rpte;
205 unsigned int forw, back;
209 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
210 * and bit 32 as a present flag. The bottom 32 bits are the
211 * index in the guest HPT of a HPTE that points to the page.
213 #define KVMPPC_RMAP_LOCK_BIT 63
214 #define KVMPPC_RMAP_RC_SHIFT 32
215 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
216 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
217 #define KVMPPC_RMAP_PRESENT 0x100000000ul
218 #define KVMPPC_RMAP_INDEX 0xfffffffful
220 /* Low-order bits in memslot->arch.slot_phys[] */
221 #define KVMPPC_PAGE_ORDER_MASK 0x1f
222 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
223 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
224 #define KVMPPC_GOT_PAGE 0x80
226 struct kvm_arch_memory_slot {
227 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
229 unsigned long *slot_phys;
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;
245 struct kvm_rma_info *rma;
246 unsigned long vrma_slb_v;
248 int using_mmu_notifiers;
250 atomic_t vcpus_running;
252 unsigned long hpt_npte;
253 unsigned long hpt_mask;
254 atomic_t hpte_mod_interest;
255 spinlock_t slot_phys_lock;
256 cpumask_t need_tlb_flush;
257 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
259 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
260 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
261 struct mutex hpt_mutex;
263 #ifdef CONFIG_PPC_BOOK3S_64
264 struct list_head spapr_tce_tables;
265 struct list_head rtas_tokens;
267 #ifdef CONFIG_KVM_MPIC
268 struct openpic *mpic;
270 #ifdef CONFIG_KVM_XICS
271 struct kvmppc_xics *xics;
273 struct kvmppc_ops *kvm_ops;
277 * Struct for a virtual core.
278 * Note: entry_exit_count combines an entry count in the bottom 8 bits
279 * and an exit count in the next 8 bits. This is so that we can
280 * atomically increment the entry count iff the exit count is 0
281 * without taking the lock.
283 struct kvmppc_vcore {
287 int entry_exit_count;
296 struct list_head runnable_threads;
298 wait_queue_head_t wq;
301 struct kvm_vcpu *runner;
303 u64 tb_offset; /* guest timebase - host timebase */
307 ulong dpdes; /* doorbell state (POWER8) */
310 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
311 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
313 /* Values for vcore_state */
314 #define VCORE_INACTIVE 0
315 #define VCORE_SLEEPING 1
316 #define VCORE_STARTING 2
317 #define VCORE_RUNNING 3
318 #define VCORE_EXITING 4
321 * Struct used to manage memory for a virtual processor area
322 * registered by a PAPR guest. There are three types of area
323 * that a guest can register.
326 unsigned long gpa; /* Current guest phys addr */
327 void *pinned_addr; /* Address in kernel linear mapping */
328 void *pinned_end; /* End of region */
329 unsigned long next_gpa; /* Guest phys addr for update */
330 unsigned long len; /* Number of bytes required */
331 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
332 bool dirty; /* true => area has been modified by kernel */
341 bool may_execute : 1;
342 u8 page_size; /* MMU_PAGE_xxx */
347 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
348 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
349 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
350 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
351 void (*slbia)(struct kvm_vcpu *vcpu);
353 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
354 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
355 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
356 struct kvmppc_pte *pte, bool data, bool iswrite);
357 void (*reset_msr)(struct kvm_vcpu *vcpu);
358 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
359 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
360 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
361 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
373 bool large : 1; /* PTEs are 16MB */
374 bool tb : 1; /* 1TB segment */
376 u8 base_page_size; /* MMU_PAGE_xxx */
379 # ifdef CONFIG_PPC_FSL_BOOK3E
380 #define KVMPPC_BOOKE_IAC_NUM 2
381 #define KVMPPC_BOOKE_DAC_NUM 2
383 #define KVMPPC_BOOKE_IAC_NUM 4
384 #define KVMPPC_BOOKE_DAC_NUM 2
386 #define KVMPPC_BOOKE_MAX_IAC 4
387 #define KVMPPC_BOOKE_MAX_DAC 2
389 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
390 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
391 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
392 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
394 #define KVMPPC_IRQ_DEFAULT 0
395 #define KVMPPC_IRQ_MPIC 1
396 #define KVMPPC_IRQ_XICS 2
400 struct kvm_vcpu_arch {
403 #ifdef CONFIG_PPC_BOOK3S
404 struct kvmppc_slb slb[64];
405 int slb_max; /* 1 + index of last valid entry in slb[] */
406 int slb_nr; /* total number of entries in SLB */
407 struct kvmppc_mmu mmu;
408 struct kvmppc_vcpu_book3s *book3s;
410 #ifdef CONFIG_PPC_BOOK3S_32
411 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
416 struct thread_fp_state fp;
424 #ifdef CONFIG_ALTIVEC
425 struct thread_vr_state vr;
428 #ifdef CONFIG_KVM_BOOKE_HV
438 #if defined(CONFIG_BOOKE)
439 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
444 #ifdef CONFIG_PPC_BOOK3S
445 /* For Gekko paired singles */
452 #ifdef CONFIG_PPC_BOOK3S
459 #ifdef CONFIG_PPC_BOOK3S
461 ulong guest_owned_ext;
491 u32 vrsave; /* also USPRG0 */
493 /* shadow_msr is unused for BookE HV */
509 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
529 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
544 struct thread_fp_state fp_tm;
546 struct thread_vr_state vr_tm;
547 u32 vrsave_tm; /* also USPRG0 */
551 #ifdef CONFIG_KVM_EXIT_TIMING
552 struct mutex exit_timing_lock;
553 struct kvmppc_exit_timing timing_exit;
554 struct kvmppc_exit_timing timing_last_enter;
556 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
557 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
558 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
559 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
560 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
561 u64 timing_last_exit;
562 struct dentry *debugfs_exit_timing;
565 #ifdef CONFIG_PPC_BOOK3S
568 unsigned long intr_msr;
577 struct timer_list wdt_timer;
584 /* guest debug registers*/
585 struct debug_reg dbg_reg;
586 /* hardware visible debug registers when in guest state */
587 struct debug_reg shadow_dbg_reg;
589 gpa_t paddr_accessed;
590 gva_t vaddr_accessed;
593 u8 io_gpr; /* GPR used as IO source/target */
594 u8 mmio_is_bigendian;
605 u8 epr_flags; /* KVMPPC_EPR_xxx */
608 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
610 struct hrtimer dec_timer;
611 struct tasklet_struct tasklet;
614 unsigned long pending_exceptions;
619 wait_queue_head_t *wqp;
620 struct kvmppc_vcore *vcore;
626 wait_queue_head_t cpu_run;
628 struct kvm_vcpu_arch_shared *shared;
629 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
630 bool shared_big_endian;
632 unsigned long magic_page_pa; /* phys addr to map the magic page to */
633 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
634 bool disable_kernel_nx;
636 int irq_type; /* one of KVM_IRQ_* */
638 struct openpic *mpic; /* KVM_IRQ_MPIC */
639 #ifdef CONFIG_KVM_XICS
640 struct kvmppc_icp *icp; /* XICS presentation controller */
643 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
644 struct kvm_vcpu_arch_shared shregs;
646 unsigned long pgfault_addr;
648 unsigned long pgfault_hpte[2];
650 struct list_head run_list;
651 struct task_struct *run_task;
652 struct kvm_run *kvm_run;
654 spinlock_t vpa_update_lock;
655 struct kvmppc_vpa vpa;
656 struct kvmppc_vpa dtl;
657 struct dtl_entry *dtl_ptr;
658 unsigned long dtl_index;
660 struct kvmppc_vpa slb_shadow;
662 spinlock_t tbacct_lock;
668 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
670 /* Values for vcpu->arch.state */
671 #define KVMPPC_VCPU_NOTREADY 0
672 #define KVMPPC_VCPU_RUNNABLE 1
673 #define KVMPPC_VCPU_BUSY_IN_HOST 2
675 /* Values for vcpu->arch.io_gpr */
676 #define KVM_MMIO_REG_MASK 0x001f
677 #define KVM_MMIO_REG_EXT_MASK 0xffe0
678 #define KVM_MMIO_REG_GPR 0x0000
679 #define KVM_MMIO_REG_FPR 0x0020
680 #define KVM_MMIO_REG_QPR 0x0040
681 #define KVM_MMIO_REG_FQPR 0x0060
683 #define __KVM_HAVE_ARCH_WQP
684 #define __KVM_HAVE_CREATE_DEVICE
686 #endif /* __POWERPC_KVM_HOST_H__ */