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_MEMORY_SLOTS 32
41 /* memory slots that does not exposed to userspace */
42 #define KVM_PRIVATE_MEM_SLOTS 4
43 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
45 #ifdef CONFIG_KVM_MMIO
46 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
49 #if !defined(CONFIG_KVM_440)
50 #include <linux/mmu_notifier.h>
52 #define KVM_ARCH_WANT_MMU_NOTIFIER
55 extern int kvm_unmap_hva(struct kvm
*kvm
, unsigned long hva
);
56 extern int kvm_unmap_hva_range(struct kvm
*kvm
,
57 unsigned long start
, unsigned long end
);
58 extern int kvm_age_hva(struct kvm
*kvm
, unsigned long hva
);
59 extern int kvm_test_age_hva(struct kvm
*kvm
, unsigned long hva
);
60 extern void kvm_set_spte_hva(struct kvm
*kvm
, unsigned long hva
, pte_t pte
);
64 /* We don't currently support large pages. */
65 #define KVM_HPAGE_GFN_SHIFT(x) 0
66 #define KVM_NR_PAGE_SIZES 1
67 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
69 #define HPTEG_CACHE_NUM (1 << 15)
70 #define HPTEG_HASH_BITS_PTE 13
71 #define HPTEG_HASH_BITS_PTE_LONG 12
72 #define HPTEG_HASH_BITS_VPTE 13
73 #define HPTEG_HASH_BITS_VPTE_LONG 5
74 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
75 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
76 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
77 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
79 /* Physical Address Mask - allowed range of real mode RAM access */
80 #define KVM_PAM 0x0fffffffffffffffULL
94 struct kvm_vcpu_stat
{
100 /* Account for special types of light exits: */
101 u32 itlb_real_miss_exits
;
102 u32 itlb_virt_miss_exits
;
103 u32 dtlb_real_miss_exits
;
104 u32 dtlb_virt_miss_exits
;
108 u32 emulated_inst_exits
;
114 #ifdef CONFIG_PPC_BOOK3S
127 enum kvm_exit_types
{
131 ITLB_REAL_MISS_EXITS
,
132 ITLB_VIRT_MISS_EXITS
,
133 DTLB_REAL_MISS_EXITS
,
134 DTLB_VIRT_MISS_EXITS
,
139 EMULATED_MTMSRWE_EXITS
,
140 EMULATED_WRTEE_EXITS
,
141 EMULATED_MTSPR_EXITS
,
142 EMULATED_MFSPR_EXITS
,
143 EMULATED_MTMSR_EXITS
,
144 EMULATED_MFMSR_EXITS
,
145 EMULATED_TLBSX_EXITS
,
146 EMULATED_TLBWE_EXITS
,
158 __NUMBER_OF_KVM_EXIT_TYPES
161 /* allow access to big endian 32bit upper/lower parts and 64bit var */
162 struct kvmppc_exit_timing
{
171 struct kvmppc_pginfo
{
176 struct kvmppc_spapr_tce_table
{
177 struct list_head list
;
181 struct page
*pages
[0];
184 struct kvmppc_linear_info
{
186 unsigned long base_pfn
;
187 unsigned long npages
;
188 struct list_head list
;
194 * The reverse mapping array has one entry for each HPTE,
195 * which stores the guest's view of the second word of the HPTE
196 * (including the guest physical address of the mapping),
197 * plus forward and backward pointers in a doubly-linked ring
198 * of HPTEs that map the same host page. The pointers in this
199 * ring are 32-bit HPTE indexes, to save space.
201 struct revmap_entry
{
202 unsigned long guest_rpte
;
203 unsigned int forw
, back
;
207 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
208 * and bit 32 as a present flag. The bottom 32 bits are the
209 * index in the guest HPT of a HPTE that points to the page.
211 #define KVMPPC_RMAP_LOCK_BIT 63
212 #define KVMPPC_RMAP_RC_SHIFT 32
213 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
214 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
215 #define KVMPPC_RMAP_PRESENT 0x100000000ul
216 #define KVMPPC_RMAP_INDEX 0xfffffffful
218 /* Low-order bits in memslot->arch.slot_phys[] */
219 #define KVMPPC_PAGE_ORDER_MASK 0x1f
220 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
221 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
222 #define KVMPPC_GOT_PAGE 0x80
224 struct kvm_arch_memory_slot
{
225 #ifdef CONFIG_KVM_BOOK3S_64_HV
227 unsigned long *slot_phys
;
228 #endif /* CONFIG_KVM_BOOK3S_64_HV */
233 #ifdef CONFIG_KVM_BOOK3S_64_HV
234 unsigned long hpt_virt
;
235 struct revmap_entry
*revmap
;
236 unsigned int host_lpid
;
237 unsigned long host_lpcr
;
239 unsigned long host_sdr1
;
243 struct kvmppc_linear_info
*rma
;
244 unsigned long vrma_slb_v
;
246 int using_mmu_notifiers
;
248 atomic_t vcpus_running
;
249 unsigned long hpt_npte
;
250 unsigned long hpt_mask
;
251 spinlock_t slot_phys_lock
;
252 unsigned short last_vcpu
[NR_CPUS
];
253 struct kvmppc_vcore
*vcores
[KVM_MAX_VCORES
];
254 struct kvmppc_linear_info
*hpt_li
;
255 #endif /* CONFIG_KVM_BOOK3S_64_HV */
256 #ifdef CONFIG_PPC_BOOK3S_64
257 struct list_head spapr_tce_tables
;
262 * Struct for a virtual core.
263 * Note: entry_exit_count combines an entry count in the bottom 8 bits
264 * and an exit count in the next 8 bits. This is so that we can
265 * atomically increment the entry count iff the exit count is 0
266 * without taking the lock.
268 struct kvmppc_vcore
{
272 int entry_exit_count
;
279 struct list_head runnable_threads
;
281 wait_queue_head_t wq
;
284 struct kvm_vcpu
*runner
;
287 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
288 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
290 /* Values for vcore_state */
291 #define VCORE_INACTIVE 0
292 #define VCORE_SLEEPING 1
293 #define VCORE_STARTING 2
294 #define VCORE_RUNNING 3
295 #define VCORE_EXITING 4
298 * Struct used to manage memory for a virtual processor area
299 * registered by a PAPR guest. There are three types of area
300 * that a guest can register.
303 void *pinned_addr
; /* Address in kernel linear mapping */
304 void *pinned_end
; /* End of region */
305 unsigned long next_gpa
; /* Guest phys addr for update */
306 unsigned long len
; /* Number of bytes required */
307 u8 update_pending
; /* 1 => update pinned_addr from next_gpa */
316 bool may_execute
: 1;
321 void (*slbmte
)(struct kvm_vcpu
*vcpu
, u64 rb
, u64 rs
);
322 u64 (*slbmfee
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
323 u64 (*slbmfev
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
324 void (*slbie
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
325 void (*slbia
)(struct kvm_vcpu
*vcpu
);
327 void (*mtsrin
)(struct kvm_vcpu
*vcpu
, u32 srnum
, ulong value
);
328 u32 (*mfsrin
)(struct kvm_vcpu
*vcpu
, u32 srnum
);
329 int (*xlate
)(struct kvm_vcpu
*vcpu
, gva_t eaddr
, struct kvmppc_pte
*pte
, bool data
);
330 void (*reset_msr
)(struct kvm_vcpu
*vcpu
);
331 void (*tlbie
)(struct kvm_vcpu
*vcpu
, ulong addr
, bool large
);
332 int (*esid_to_vsid
)(struct kvm_vcpu
*vcpu
, ulong esid
, u64
*vsid
);
333 u64 (*ea_to_vp
)(struct kvm_vcpu
*vcpu
, gva_t eaddr
, bool data
);
334 bool (*is_dcbz32
)(struct kvm_vcpu
*vcpu
);
346 bool large
: 1; /* PTEs are 16MB */
347 bool tb
: 1; /* 1TB segment */
351 # ifdef CONFIG_PPC_FSL_BOOK3E
352 #define KVMPPC_BOOKE_IAC_NUM 2
353 #define KVMPPC_BOOKE_DAC_NUM 2
355 #define KVMPPC_BOOKE_IAC_NUM 4
356 #define KVMPPC_BOOKE_DAC_NUM 2
358 #define KVMPPC_BOOKE_MAX_IAC 4
359 #define KVMPPC_BOOKE_MAX_DAC 2
361 struct kvmppc_booke_debug_reg
{
365 #ifdef CONFIG_KVM_E500MC
368 u64 iac
[KVMPPC_BOOKE_MAX_IAC
];
369 u64 dac
[KVMPPC_BOOKE_MAX_DAC
];
372 struct kvm_vcpu_arch
{
375 #ifdef CONFIG_PPC_BOOK3S
376 struct kvmppc_slb slb
[64];
377 int slb_max
; /* 1 + index of last valid entry in slb[] */
378 int slb_nr
; /* total number of entries in SLB */
379 struct kvmppc_mmu mmu
;
393 #ifdef CONFIG_ALTIVEC
402 #ifdef CONFIG_KVM_BOOKE_HV
413 #ifdef CONFIG_PPC_BOOK3S
414 /* For Gekko paired singles */
425 #ifdef CONFIG_PPC_BOOK3S
427 ulong guest_owned_ext
;
436 u32 vrsave
; /* also USPRG0 */
438 /* shadow_msr is unused for BookE HV */
454 ulong tsr
; /* we need to perform set/clr_bits() which requires ulong */
471 #ifdef CONFIG_KVM_EXIT_TIMING
472 struct mutex exit_timing_lock
;
473 struct kvmppc_exit_timing timing_exit
;
474 struct kvmppc_exit_timing timing_last_enter
;
476 u32 timing_count_type
[__NUMBER_OF_KVM_EXIT_TYPES
];
477 u64 timing_sum_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
478 u64 timing_sum_quad_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
479 u64 timing_min_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
480 u64 timing_max_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
481 u64 timing_last_exit
;
482 struct dentry
*debugfs_exit_timing
;
485 #ifdef CONFIG_PPC_BOOK3S
496 struct timer_list wdt_timer
;
500 struct kvmppc_booke_debug_reg dbg_reg
;
502 gpa_t paddr_accessed
;
503 gva_t vaddr_accessed
;
505 u8 io_gpr
; /* GPR used as IO source/target */
506 u8 mmio_is_bigendian
;
518 u32 cpr0_cfgaddr
; /* holds the last set cpr0_cfgaddr */
520 struct hrtimer dec_timer
;
521 struct tasklet_struct tasklet
;
524 unsigned long pending_exceptions
;
530 wait_queue_head_t
*wqp
;
531 struct kvmppc_vcore
*vcore
;
537 wait_queue_head_t cpu_run
;
539 struct kvm_vcpu_arch_shared
*shared
;
540 unsigned long magic_page_pa
; /* phys addr to map the magic page to */
541 unsigned long magic_page_ea
; /* effect. addr to map the magic page to */
543 #ifdef CONFIG_KVM_BOOK3S_64_HV
544 struct kvm_vcpu_arch_shared shregs
;
546 unsigned long pgfault_addr
;
548 unsigned long pgfault_hpte
[2];
550 struct list_head run_list
;
551 struct task_struct
*run_task
;
552 struct kvm_run
*kvm_run
;
555 spinlock_t vpa_update_lock
;
556 struct kvmppc_vpa vpa
;
557 struct kvmppc_vpa dtl
;
558 struct dtl_entry
*dtl_ptr
;
559 unsigned long dtl_index
;
561 struct kvmppc_vpa slb_shadow
;
563 spinlock_t tbacct_lock
;
569 /* Values for vcpu->arch.state */
570 #define KVMPPC_VCPU_NOTREADY 0
571 #define KVMPPC_VCPU_RUNNABLE 1
572 #define KVMPPC_VCPU_BUSY_IN_HOST 2
574 /* Values for vcpu->arch.io_gpr */
575 #define KVM_MMIO_REG_MASK 0x001f
576 #define KVM_MMIO_REG_EXT_MASK 0xffe0
577 #define KVM_MMIO_REG_GPR 0x0000
578 #define KVM_MMIO_REG_FPR 0x0020
579 #define KVM_MMIO_REG_QPR 0x0040
580 #define KVM_MMIO_REG_FQPR 0x0060
582 #define __KVM_HAVE_ARCH_WQP
584 #endif /* __POWERPC_KVM_HOST_H__ */