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 #define KVM_MAX_VCPUS NR_CPUS
37 #define KVM_MAX_VCORES NR_CPUS
38 #define KVM_MEMORY_SLOTS 32
39 /* memory slots that does not exposed to userspace */
40 #define KVM_PRIVATE_MEM_SLOTS 4
41 #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
47 /* We don't currently support large pages. */
48 #define KVM_HPAGE_GFN_SHIFT(x) 0
49 #define KVM_NR_PAGE_SIZES 1
50 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
52 #define HPTEG_CACHE_NUM (1 << 15)
53 #define HPTEG_HASH_BITS_PTE 13
54 #define HPTEG_HASH_BITS_PTE_LONG 12
55 #define HPTEG_HASH_BITS_VPTE 13
56 #define HPTEG_HASH_BITS_VPTE_LONG 5
57 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
58 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
59 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
60 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
62 /* Physical Address Mask - allowed range of real mode RAM access */
63 #define KVM_PAM 0x0fffffffffffffffULL
77 struct kvm_vcpu_stat
{
83 /* Account for special types of light exits: */
84 u32 itlb_real_miss_exits
;
85 u32 itlb_virt_miss_exits
;
86 u32 dtlb_real_miss_exits
;
87 u32 dtlb_virt_miss_exits
;
91 u32 emulated_inst_exits
;
95 #ifdef CONFIG_PPC_BOOK3S
108 enum kvm_exit_types
{
112 ITLB_REAL_MISS_EXITS
,
113 ITLB_VIRT_MISS_EXITS
,
114 DTLB_REAL_MISS_EXITS
,
115 DTLB_VIRT_MISS_EXITS
,
120 EMULATED_MTMSRWE_EXITS
,
121 EMULATED_WRTEE_EXITS
,
122 EMULATED_MTSPR_EXITS
,
123 EMULATED_MFSPR_EXITS
,
124 EMULATED_MTMSR_EXITS
,
125 EMULATED_MFMSR_EXITS
,
126 EMULATED_TLBSX_EXITS
,
127 EMULATED_TLBWE_EXITS
,
136 __NUMBER_OF_KVM_EXIT_TYPES
139 /* allow access to big endian 32bit upper/lower parts and 64bit var */
140 struct kvmppc_exit_timing
{
149 struct kvmppc_pginfo
{
154 struct kvmppc_spapr_tce_table
{
155 struct list_head list
;
159 struct page
*pages
[0];
162 struct kvmppc_rma_info
{
164 unsigned long base_pfn
;
165 unsigned long npages
;
166 struct list_head list
;
171 * The reverse mapping array has one entry for each HPTE,
172 * which stores the guest's view of the second word of the HPTE
173 * (including the guest physical address of the mapping).
175 struct revmap_entry
{
176 unsigned long guest_rpte
;
179 /* Low-order bits in kvm->arch.slot_phys[][] */
180 #define KVMPPC_GOT_PAGE 0x80
183 #ifdef CONFIG_KVM_BOOK3S_64_HV
184 unsigned long hpt_virt
;
185 struct revmap_entry
*revmap
;
186 unsigned long ram_psize
;
187 unsigned long ram_porder
;
189 unsigned int host_lpid
;
190 unsigned long host_lpcr
;
192 unsigned long host_sdr1
;
196 struct kvmppc_rma_info
*rma
;
197 struct list_head spapr_tce_tables
;
198 unsigned long *slot_phys
[KVM_MEM_SLOTS_NUM
];
199 int slot_npages
[KVM_MEM_SLOTS_NUM
];
200 unsigned short last_vcpu
[NR_CPUS
];
201 struct kvmppc_vcore
*vcores
[KVM_MAX_VCORES
];
202 #endif /* CONFIG_KVM_BOOK3S_64_HV */
206 * Struct for a virtual core.
207 * Note: entry_exit_count combines an entry count in the bottom 8 bits
208 * and an exit count in the next 8 bits. This is so that we can
209 * atomically increment the entry count iff the exit count is 0
210 * without taking the lock.
212 struct kvmppc_vcore
{
216 int entry_exit_count
;
223 struct list_head runnable_threads
;
225 wait_queue_head_t wq
;
228 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
229 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
231 /* Values for vcore_state */
232 #define VCORE_INACTIVE 0
233 #define VCORE_RUNNING 1
234 #define VCORE_EXITING 2
235 #define VCORE_SLEEPING 3
243 bool may_execute
: 1;
248 void (*slbmte
)(struct kvm_vcpu
*vcpu
, u64 rb
, u64 rs
);
249 u64 (*slbmfee
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
250 u64 (*slbmfev
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
251 void (*slbie
)(struct kvm_vcpu
*vcpu
, u64 slb_nr
);
252 void (*slbia
)(struct kvm_vcpu
*vcpu
);
254 void (*mtsrin
)(struct kvm_vcpu
*vcpu
, u32 srnum
, ulong value
);
255 u32 (*mfsrin
)(struct kvm_vcpu
*vcpu
, u32 srnum
);
256 int (*xlate
)(struct kvm_vcpu
*vcpu
, gva_t eaddr
, struct kvmppc_pte
*pte
, bool data
);
257 void (*reset_msr
)(struct kvm_vcpu
*vcpu
);
258 void (*tlbie
)(struct kvm_vcpu
*vcpu
, ulong addr
, bool large
);
259 int (*esid_to_vsid
)(struct kvm_vcpu
*vcpu
, ulong esid
, u64
*vsid
);
260 u64 (*ea_to_vp
)(struct kvm_vcpu
*vcpu
, gva_t eaddr
, bool data
);
261 bool (*is_dcbz32
)(struct kvm_vcpu
*vcpu
);
273 bool large
: 1; /* PTEs are 16MB */
274 bool tb
: 1; /* 1TB segment */
278 struct kvm_vcpu_arch
{
281 #ifdef CONFIG_PPC_BOOK3S
282 struct kvmppc_slb slb
[64];
283 int slb_max
; /* 1 + index of last valid entry in slb[] */
284 int slb_nr
; /* total number of entries in SLB */
285 struct kvmppc_mmu mmu
;
299 #ifdef CONFIG_ALTIVEC
308 #ifdef CONFIG_PPC_BOOK3S
309 /* For Gekko paired singles */
320 #ifdef CONFIG_PPC_BOOK3S
322 ulong guest_owned_ext
;
331 u32 vrsave
; /* also USPRG0 */
346 ulong tsr
; /* we need to perform set/clr_bits() which requires ulong */
365 #ifdef CONFIG_KVM_EXIT_TIMING
366 struct mutex exit_timing_lock
;
367 struct kvmppc_exit_timing timing_exit
;
368 struct kvmppc_exit_timing timing_last_enter
;
370 u32 timing_count_type
[__NUMBER_OF_KVM_EXIT_TYPES
];
371 u64 timing_sum_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
372 u64 timing_sum_quad_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
373 u64 timing_min_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
374 u64 timing_max_duration
[__NUMBER_OF_KVM_EXIT_TYPES
];
375 u64 timing_last_exit
;
376 struct dentry
*debugfs_exit_timing
;
379 #ifdef CONFIG_PPC_BOOK3S
390 gpa_t paddr_accessed
;
392 u8 io_gpr
; /* GPR used as IO source/target */
393 u8 mmio_is_bigendian
;
404 u32 cpr0_cfgaddr
; /* holds the last set cpr0_cfgaddr */
406 struct hrtimer dec_timer
;
407 struct tasklet_struct tasklet
;
410 unsigned long pending_exceptions
;
417 struct slb_shadow
*slb_shadow
;
421 wait_queue_head_t
*wqp
;
422 struct kvmppc_vcore
*vcore
;
428 wait_queue_head_t cpu_run
;
430 struct kvm_vcpu_arch_shared
*shared
;
431 unsigned long magic_page_pa
; /* phys addr to map the magic page to */
432 unsigned long magic_page_ea
; /* effect. addr to map the magic page to */
434 #ifdef CONFIG_KVM_BOOK3S_64_HV
435 struct kvm_vcpu_arch_shared shregs
;
437 struct list_head run_list
;
438 struct task_struct
*run_task
;
439 struct kvm_run
*kvm_run
;
443 /* Values for vcpu->arch.state */
444 #define KVMPPC_VCPU_STOPPED 0
445 #define KVMPPC_VCPU_BUSY_IN_HOST 1
446 #define KVMPPC_VCPU_RUNNABLE 2
448 #endif /* __POWERPC_KVM_HOST_H__ */