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_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
72 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
73 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
74 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
76 /* Physical Address Mask - allowed range of real mode RAM access */
77 #define KVM_PAM 0x0fffffffffffffffULL
91 struct kvm_vcpu_stat
{
97 /* Account for special types of light exits: */
98 u32 itlb_real_miss_exits
;
99 u32 itlb_virt_miss_exits
;
100 u32 dtlb_real_miss_exits
;
101 u32 dtlb_virt_miss_exits
;
105 u32 emulated_inst_exits
;
111 #ifdef CONFIG_PPC_BOOK3S
124 enum kvm_exit_types
{
128 ITLB_REAL_MISS_EXITS
,
129 ITLB_VIRT_MISS_EXITS
,
130 DTLB_REAL_MISS_EXITS
,
131 DTLB_VIRT_MISS_EXITS
,
136 EMULATED_MTMSRWE_EXITS
,
137 EMULATED_WRTEE_EXITS
,
138 EMULATED_MTSPR_EXITS
,
139 EMULATED_MFSPR_EXITS
,
140 EMULATED_MTMSR_EXITS
,
141 EMULATED_MFMSR_EXITS
,
142 EMULATED_TLBSX_EXITS
,
143 EMULATED_TLBWE_EXITS
,
155 __NUMBER_OF_KVM_EXIT_TYPES
158 /* allow access to big endian 32bit upper/lower parts and 64bit var */
159 struct kvmppc_exit_timing
{
168 struct kvmppc_pginfo
{
173 struct kvmppc_spapr_tce_table
{
174 struct list_head list
;
178 struct page
*pages
[0];
181 struct kvm_rma_info
{
183 unsigned long base_pfn
;
186 /* XICS components, defined in book3s_xics.c */
191 * The reverse mapping array has one entry for each HPTE,
192 * which stores the guest's view of the second word of the HPTE
193 * (including the guest physical address of the mapping),
194 * plus forward and backward pointers in a doubly-linked ring
195 * of HPTEs that map the same host page. The pointers in this
196 * ring are 32-bit HPTE indexes, to save space.
198 struct revmap_entry
{
199 unsigned long guest_rpte
;
200 unsigned int forw
, back
;
204 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
205 * and bit 32 as a present flag. The bottom 32 bits are the
206 * index in the guest HPT of a HPTE that points to the page.
208 #define KVMPPC_RMAP_LOCK_BIT 63
209 #define KVMPPC_RMAP_RC_SHIFT 32
210 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
211 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
212 #define KVMPPC_RMAP_PRESENT 0x100000000ul
213 #define KVMPPC_RMAP_INDEX 0xfffffffful
215 /* Low-order bits in memslot->arch.slot_phys[] */
216 #define KVMPPC_PAGE_ORDER_MASK 0x1f
217 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
218 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
219 #define KVMPPC_GOT_PAGE 0x80
221 struct kvm_arch_memory_slot
{
222 #ifdef CONFIG_KVM_BOOK3S_64_HV
224 unsigned long *slot_phys
;
225 #endif /* CONFIG_KVM_BOOK3S_64_HV */
230 #ifdef CONFIG_KVM_BOOK3S_64_HV
231 unsigned long hpt_virt
;
232 struct revmap_entry
*revmap
;
233 unsigned int host_lpid
;
234 unsigned long host_lpcr
;
236 unsigned long host_sdr1
;
240 struct kvm_rma_info
*rma
;
241 unsigned long vrma_slb_v
;
243 int using_mmu_notifiers
;
245 atomic_t vcpus_running
;
247 unsigned long hpt_npte
;
248 unsigned long hpt_mask
;
249 atomic_t hpte_mod_interest
;
250 spinlock_t slot_phys_lock
;
251 cpumask_t need_tlb_flush
;
252 struct kvmppc_vcore
*vcores
[KVM_MAX_VCORES
];
254 #endif /* CONFIG_KVM_BOOK3S_64_HV */
255 #ifdef CONFIG_PPC_BOOK3S_64
256 struct list_head spapr_tce_tables
;
257 struct list_head rtas_tokens
;
259 #ifdef CONFIG_KVM_MPIC
260 struct openpic
*mpic
;
262 #ifdef CONFIG_KVM_XICS
263 struct kvmppc_xics
*xics
;
268 * Struct for a virtual core.
269 * Note: entry_exit_count combines an entry count in the bottom 8 bits
270 * and an exit count in the next 8 bits. This is so that we can
271 * atomically increment the entry count iff the exit count is 0
272 * without taking the lock.
274 struct kvmppc_vcore
{
278 int entry_exit_count
;
286 struct list_head runnable_threads
;
288 wait_queue_head_t wq
;
291 struct kvm_vcpu
*runner
;
292 u64 tb_offset
; /* guest timebase - host timebase */
296 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
297 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
299 /* Values for vcore_state */
300 #define VCORE_INACTIVE 0
301 #define VCORE_SLEEPING 1
302 #define VCORE_STARTING 2
303 #define VCORE_RUNNING 3
304 #define VCORE_EXITING 4
307 * Struct used to manage memory for a virtual processor area
308 * registered by a PAPR guest. There are three types of area
309 * that a guest can register.
312 unsigned long gpa
; /* Current guest phys addr */
313 void *pinned_addr
; /* Address in kernel linear mapping */
314 void *pinned_end
; /* End of region */
315 unsigned long next_gpa
; /* Guest phys addr for update */
316 unsigned long len
; /* Number of bytes required */
317 u8 update_pending
; /* 1 => update pinned_addr from next_gpa */
318 bool dirty
; /* true => area has been modified by kernel */
327 bool may_execute
: 1;
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
, struct kvmppc_pte
*pte
, bool data
);
341 void (*reset_msr
)(struct kvm_vcpu
*vcpu
);
342 void (*tlbie
)(struct kvm_vcpu
*vcpu
, ulong addr
, bool large
);
343 int (*esid_to_vsid
)(struct kvm_vcpu
*vcpu
, ulong esid
, u64
*vsid
);
344 u64 (*ea_to_vp
)(struct kvm_vcpu
*vcpu
, gva_t eaddr
, bool data
);
345 bool (*is_dcbz32
)(struct kvm_vcpu
*vcpu
);
357 bool large
: 1; /* PTEs are 16MB */
358 bool tb
: 1; /* 1TB segment */
362 # ifdef CONFIG_PPC_FSL_BOOK3E
363 #define KVMPPC_BOOKE_IAC_NUM 2
364 #define KVMPPC_BOOKE_DAC_NUM 2
366 #define KVMPPC_BOOKE_IAC_NUM 4
367 #define KVMPPC_BOOKE_DAC_NUM 2
369 #define KVMPPC_BOOKE_MAX_IAC 4
370 #define KVMPPC_BOOKE_MAX_DAC 2
372 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
373 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
374 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
375 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
377 struct kvmppc_booke_debug_reg
{
381 #ifdef CONFIG_KVM_E500MC
384 u64 iac
[KVMPPC_BOOKE_MAX_IAC
];
385 u64 dac
[KVMPPC_BOOKE_MAX_DAC
];
388 #define KVMPPC_IRQ_DEFAULT 0
389 #define KVMPPC_IRQ_MPIC 1
390 #define KVMPPC_IRQ_XICS 2
394 struct kvm_vcpu_arch
{
397 #ifdef CONFIG_PPC_BOOK3S
398 struct kvmppc_slb slb
[64];
399 int slb_max
; /* 1 + index of last valid entry in slb[] */
400 int slb_nr
; /* total number of entries in SLB */
401 struct kvmppc_mmu mmu
;
415 #ifdef CONFIG_ALTIVEC
424 #ifdef CONFIG_KVM_BOOKE_HV
434 #if defined(CONFIG_BOOKE)
435 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
440 #ifdef CONFIG_PPC_BOOK3S
441 /* For Gekko paired singles */
452 #ifdef CONFIG_PPC_BOOK3S
454 ulong guest_owned_ext
;
464 u32 vrsave
; /* also USPRG0 */
466 /* shadow_msr is unused for BookE HV */
482 ulong tsr
; /* we need to perform set/clr_bits() which requires ulong */
501 #ifdef CONFIG_KVM_EXIT_TIMING
502 struct mutex exit_timing_lock
;
503 struct kvmppc_exit_timing timing_exit
;
504 struct kvmppc_exit_timing timing_last_enter
;
506 u32 timing_count_type
[__NUMBER_OF_KVM_EXIT_TYPES
];
507 u64 timing_sum_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
508 u64 timing_sum_quad_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
509 u64 timing_min_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
510 u64 timing_max_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
511 u64 timing_last_exit
;
512 struct dentry
*debugfs_exit_timing
;
515 #ifdef CONFIG_PPC_BOOK3S
526 struct timer_list wdt_timer
;
533 struct kvmppc_booke_debug_reg dbg_reg
;
535 gpa_t paddr_accessed
;
536 gva_t vaddr_accessed
;
538 u8 io_gpr
; /* GPR used as IO source/target */
539 u8 mmio_is_bigendian
;
550 u8 epr_flags
; /* KVMPPC_EPR_xxx */
553 u32 cpr0_cfgaddr
; /* holds the last set cpr0_cfgaddr */
555 struct hrtimer dec_timer
;
556 struct tasklet_struct tasklet
;
559 unsigned long pending_exceptions
;
564 wait_queue_head_t
*wqp
;
565 struct kvmppc_vcore
*vcore
;
571 wait_queue_head_t cpu_run
;
573 struct kvm_vcpu_arch_shared
*shared
;
574 unsigned long magic_page_pa
; /* phys addr to map the magic page to */
575 unsigned long magic_page_ea
; /* effect. addr to map the magic page to */
577 int irq_type
; /* one of KVM_IRQ_* */
579 struct openpic
*mpic
; /* KVM_IRQ_MPIC */
580 #ifdef CONFIG_KVM_XICS
581 struct kvmppc_icp
*icp
; /* XICS presentation controller */
584 #ifdef CONFIG_KVM_BOOK3S_64_HV
585 struct kvm_vcpu_arch_shared shregs
;
587 unsigned long pgfault_addr
;
589 unsigned long pgfault_hpte
[2];
591 struct list_head run_list
;
592 struct task_struct
*run_task
;
593 struct kvm_run
*kvm_run
;
596 spinlock_t vpa_update_lock
;
597 struct kvmppc_vpa vpa
;
598 struct kvmppc_vpa dtl
;
599 struct dtl_entry
*dtl_ptr
;
600 unsigned long dtl_index
;
602 struct kvmppc_vpa slb_shadow
;
604 spinlock_t tbacct_lock
;
610 /* Values for vcpu->arch.state */
611 #define KVMPPC_VCPU_NOTREADY 0
612 #define KVMPPC_VCPU_RUNNABLE 1
613 #define KVMPPC_VCPU_BUSY_IN_HOST 2
615 /* Values for vcpu->arch.io_gpr */
616 #define KVM_MMIO_REG_MASK 0x001f
617 #define KVM_MMIO_REG_EXT_MASK 0xffe0
618 #define KVM_MMIO_REG_GPR 0x0000
619 #define KVM_MMIO_REG_FPR 0x0020
620 #define KVM_MMIO_REG_QPR 0x0040
621 #define KVM_MMIO_REG_FQPR 0x0060
623 #define __KVM_HAVE_ARCH_WQP
624 #define __KVM_HAVE_CREATE_DEVICE
626 #endif /* __POWERPC_KVM_HOST_H__ */