Commit | Line | Data |
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bbf45ba5 HB |
1 | /* |
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. | |
5 | * | |
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. | |
10 | * | |
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. | |
14 | * | |
15 | * Copyright IBM Corp. 2007 | |
16 | * | |
17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
18 | */ | |
19 | ||
20 | #ifndef __POWERPC_KVM_HOST_H__ | |
21 | #define __POWERPC_KVM_HOST_H__ | |
22 | ||
23 | #include <linux/mutex.h> | |
544c6761 AG |
24 | #include <linux/hrtimer.h> |
25 | #include <linux/interrupt.h> | |
bbf45ba5 HB |
26 | #include <linux/types.h> |
27 | #include <linux/kvm_types.h> | |
371fefd6 PM |
28 | #include <linux/threads.h> |
29 | #include <linux/spinlock.h> | |
96bc451a | 30 | #include <linux/kvm_para.h> |
aa04b4cc PM |
31 | #include <linux/list.h> |
32 | #include <linux/atomic.h> | |
bbf45ba5 | 33 | #include <asm/kvm_asm.h> |
371fefd6 | 34 | #include <asm/processor.h> |
bbf45ba5 | 35 | |
371fefd6 PM |
36 | #define KVM_MAX_VCPUS NR_CPUS |
37 | #define KVM_MAX_VCORES NR_CPUS | |
bbf45ba5 HB |
38 | #define KVM_MEMORY_SLOTS 32 |
39 | /* memory slots that does not exposed to userspace */ | |
40 | #define KVM_PRIVATE_MEM_SLOTS 4 | |
b2b2f165 | 41 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
bbf45ba5 | 42 | |
de56a948 | 43 | #ifdef CONFIG_KVM_MMIO |
588968b6 | 44 | #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 |
de56a948 | 45 | #endif |
588968b6 | 46 | |
bbf45ba5 | 47 | /* We don't currently support large pages. */ |
82855413 | 48 | #define KVM_HPAGE_GFN_SHIFT(x) 0 |
ec04b260 JR |
49 | #define KVM_NR_PAGE_SIZES 1 |
50 | #define KVM_PAGES_PER_HPAGE(x) (1UL<<31) | |
bbf45ba5 | 51 | |
fef093be AG |
52 | #define HPTEG_CACHE_NUM (1 << 15) |
53 | #define HPTEG_HASH_BITS_PTE 13 | |
2d27fc5e | 54 | #define HPTEG_HASH_BITS_PTE_LONG 12 |
fef093be AG |
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) | |
2d27fc5e | 58 | #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG) |
fef093be AG |
59 | #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE) |
60 | #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG) | |
ca95150b | 61 | |
28e83b4f AG |
62 | /* Physical Address Mask - allowed range of real mode RAM access */ |
63 | #define KVM_PAM 0x0fffffffffffffffULL | |
64 | ||
bbf45ba5 HB |
65 | struct kvm; |
66 | struct kvm_run; | |
67 | struct kvm_vcpu; | |
68 | ||
a8606e20 PM |
69 | struct lppaca; |
70 | struct slb_shadow; | |
71 | struct dtl; | |
72 | ||
bbf45ba5 HB |
73 | struct kvm_vm_stat { |
74 | u32 remote_tlb_flush; | |
75 | }; | |
76 | ||
77 | struct kvm_vcpu_stat { | |
78 | u32 sum_exits; | |
79 | u32 mmio_exits; | |
80 | u32 dcr_exits; | |
81 | u32 signal_exits; | |
82 | u32 light_exits; | |
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; | |
88 | u32 syscall_exits; | |
89 | u32 isi_exits; | |
90 | u32 dsi_exits; | |
91 | u32 emulated_inst_exits; | |
92 | u32 dec_exits; | |
93 | u32 ext_intr_exits; | |
45c5eb67 | 94 | u32 halt_wakeup; |
00c3a37c | 95 | #ifdef CONFIG_PPC_BOOK3S |
ca95150b AG |
96 | u32 pf_storage; |
97 | u32 pf_instruc; | |
98 | u32 sp_storage; | |
99 | u32 sp_instruc; | |
100 | u32 queue_intr; | |
101 | u32 ld; | |
102 | u32 ld_slow; | |
103 | u32 st; | |
104 | u32 st_slow; | |
105 | #endif | |
bbf45ba5 HB |
106 | }; |
107 | ||
73e75b41 HB |
108 | enum kvm_exit_types { |
109 | MMIO_EXITS, | |
110 | DCR_EXITS, | |
111 | SIGNAL_EXITS, | |
112 | ITLB_REAL_MISS_EXITS, | |
113 | ITLB_VIRT_MISS_EXITS, | |
114 | DTLB_REAL_MISS_EXITS, | |
115 | DTLB_VIRT_MISS_EXITS, | |
116 | SYSCALL_EXITS, | |
117 | ISI_EXITS, | |
118 | DSI_EXITS, | |
119 | EMULATED_INST_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, | |
128 | EMULATED_RFI_EXITS, | |
129 | DEC_EXITS, | |
130 | EXT_INTR_EXITS, | |
131 | HALT_WAKEUP, | |
132 | USR_PR_INST, | |
133 | FP_UNAVAIL, | |
134 | DEBUG_EXITS, | |
135 | TIMEINGUEST, | |
136 | __NUMBER_OF_KVM_EXIT_TYPES | |
137 | }; | |
138 | ||
73e75b41 | 139 | /* allow access to big endian 32bit upper/lower parts and 64bit var */ |
7b701591 | 140 | struct kvmppc_exit_timing { |
73e75b41 HB |
141 | union { |
142 | u64 tv64; | |
143 | struct { | |
144 | u32 tbu, tbl; | |
145 | } tv32; | |
146 | }; | |
147 | }; | |
73e75b41 | 148 | |
de56a948 PM |
149 | struct kvmppc_pginfo { |
150 | unsigned long pfn; | |
151 | atomic_t refcnt; | |
152 | }; | |
153 | ||
54738c09 DG |
154 | struct kvmppc_spapr_tce_table { |
155 | struct list_head list; | |
156 | struct kvm *kvm; | |
157 | u64 liobn; | |
158 | u32 window_size; | |
159 | struct page *pages[0]; | |
160 | }; | |
161 | ||
aa04b4cc PM |
162 | struct kvmppc_rma_info { |
163 | void *base_virt; | |
164 | unsigned long base_pfn; | |
165 | unsigned long npages; | |
166 | struct list_head list; | |
167 | atomic_t use_count; | |
168 | }; | |
169 | ||
8936dda4 PM |
170 | /* |
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 | |
06ce2c63 PM |
173 | * (including the guest physical address of the mapping), |
174 | * plus forward and backward pointers in a doubly-linked ring | |
175 | * of HPTEs that map the same host page. The pointers in this | |
176 | * ring are 32-bit HPTE indexes, to save space. | |
8936dda4 PM |
177 | */ |
178 | struct revmap_entry { | |
179 | unsigned long guest_rpte; | |
06ce2c63 | 180 | unsigned int forw, back; |
8936dda4 PM |
181 | }; |
182 | ||
06ce2c63 PM |
183 | /* |
184 | * We use the top bit of each memslot->rmap entry as a lock bit, | |
185 | * and bit 32 as a present flag. The bottom 32 bits are the | |
186 | * index in the guest HPT of a HPTE that points to the page. | |
187 | */ | |
188 | #define KVMPPC_RMAP_LOCK_BIT 63 | |
189 | #define KVMPPC_RMAP_REF_BIT 33 | |
190 | #define KVMPPC_RMAP_REFERENCED (1ul << KVMPPC_RMAP_REF_BIT) | |
191 | #define KVMPPC_RMAP_PRESENT 0x100000000ul | |
192 | #define KVMPPC_RMAP_INDEX 0xfffffffful | |
193 | ||
b2b2f165 | 194 | /* Low-order bits in kvm->arch.slot_phys[][] */ |
da9d1d7f | 195 | #define KVMPPC_PAGE_ORDER_MASK 0x1f |
9d0ef5ea PM |
196 | #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */ |
197 | #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */ | |
b2b2f165 PM |
198 | #define KVMPPC_GOT_PAGE 0x80 |
199 | ||
bbf45ba5 | 200 | struct kvm_arch { |
de56a948 PM |
201 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
202 | unsigned long hpt_virt; | |
8936dda4 | 203 | struct revmap_entry *revmap; |
de56a948 PM |
204 | unsigned int lpid; |
205 | unsigned int host_lpid; | |
206 | unsigned long host_lpcr; | |
207 | unsigned long sdr1; | |
208 | unsigned long host_sdr1; | |
209 | int tlbie_lock; | |
aa04b4cc PM |
210 | unsigned long lpcr; |
211 | unsigned long rmor; | |
212 | struct kvmppc_rma_info *rma; | |
697d3899 | 213 | unsigned long vrma_slb_v; |
c77162de | 214 | int rma_setup_done; |
54738c09 | 215 | struct list_head spapr_tce_tables; |
c77162de | 216 | spinlock_t slot_phys_lock; |
b2b2f165 PM |
217 | unsigned long *slot_phys[KVM_MEM_SLOTS_NUM]; |
218 | int slot_npages[KVM_MEM_SLOTS_NUM]; | |
de56a948 | 219 | unsigned short last_vcpu[NR_CPUS]; |
371fefd6 | 220 | struct kvmppc_vcore *vcores[KVM_MAX_VCORES]; |
de56a948 | 221 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
bbf45ba5 HB |
222 | }; |
223 | ||
371fefd6 PM |
224 | /* |
225 | * Struct for a virtual core. | |
226 | * Note: entry_exit_count combines an entry count in the bottom 8 bits | |
227 | * and an exit count in the next 8 bits. This is so that we can | |
228 | * atomically increment the entry count iff the exit count is 0 | |
229 | * without taking the lock. | |
230 | */ | |
231 | struct kvmppc_vcore { | |
232 | int n_runnable; | |
19ccb76a | 233 | int n_busy; |
371fefd6 PM |
234 | int num_threads; |
235 | int entry_exit_count; | |
236 | int n_woken; | |
237 | int nap_count; | |
19ccb76a | 238 | int napping_threads; |
371fefd6 | 239 | u16 pcpu; |
19ccb76a | 240 | u8 vcore_state; |
371fefd6 PM |
241 | u8 in_guest; |
242 | struct list_head runnable_threads; | |
243 | spinlock_t lock; | |
19ccb76a | 244 | wait_queue_head_t wq; |
371fefd6 PM |
245 | }; |
246 | ||
247 | #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff) | |
248 | #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8) | |
249 | ||
19ccb76a PM |
250 | /* Values for vcore_state */ |
251 | #define VCORE_INACTIVE 0 | |
252 | #define VCORE_RUNNING 1 | |
253 | #define VCORE_EXITING 2 | |
254 | #define VCORE_SLEEPING 3 | |
255 | ||
ca95150b | 256 | struct kvmppc_pte { |
af7b4d10 | 257 | ulong eaddr; |
ca95150b | 258 | u64 vpage; |
af7b4d10 | 259 | ulong raddr; |
3ed9c6d2 AG |
260 | bool may_read : 1; |
261 | bool may_write : 1; | |
262 | bool may_execute : 1; | |
ca95150b AG |
263 | }; |
264 | ||
265 | struct kvmppc_mmu { | |
266 | /* book3s_64 only */ | |
267 | void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs); | |
268 | u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr); | |
269 | u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr); | |
270 | void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr); | |
271 | void (*slbia)(struct kvm_vcpu *vcpu); | |
272 | /* book3s */ | |
273 | void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value); | |
274 | u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum); | |
275 | int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data); | |
276 | void (*reset_msr)(struct kvm_vcpu *vcpu); | |
277 | void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large); | |
af7b4d10 | 278 | int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid); |
ca95150b AG |
279 | u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data); |
280 | bool (*is_dcbz32)(struct kvm_vcpu *vcpu); | |
281 | }; | |
282 | ||
c4befc58 PM |
283 | struct kvmppc_slb { |
284 | u64 esid; | |
285 | u64 vsid; | |
286 | u64 orige; | |
287 | u64 origv; | |
288 | bool valid : 1; | |
289 | bool Ks : 1; | |
290 | bool Kp : 1; | |
291 | bool nx : 1; | |
292 | bool large : 1; /* PTEs are 16MB */ | |
293 | bool tb : 1; /* 1TB segment */ | |
294 | bool class : 1; | |
ca95150b AG |
295 | }; |
296 | ||
bbf45ba5 | 297 | struct kvm_vcpu_arch { |
ca95150b | 298 | ulong host_stack; |
bbf45ba5 | 299 | u32 host_pid; |
00c3a37c | 300 | #ifdef CONFIG_PPC_BOOK3S |
c4befc58 | 301 | struct kvmppc_slb slb[64]; |
de56a948 | 302 | int slb_max; /* 1 + index of last valid entry in slb[] */ |
c4befc58 | 303 | int slb_nr; /* total number of entries in SLB */ |
ca95150b AG |
304 | struct kvmppc_mmu mmu; |
305 | #endif | |
bbf45ba5 | 306 | |
5cf8ca22 | 307 | ulong gpr[32]; |
bbf45ba5 | 308 | |
180a34d2 | 309 | u64 fpr[32]; |
c62e096d | 310 | u64 fpscr; |
180a34d2 | 311 | |
4cd35f67 SW |
312 | #ifdef CONFIG_SPE |
313 | ulong evr[32]; | |
314 | ulong spefscr; | |
315 | ulong host_spefscr; | |
316 | u64 acc; | |
317 | #endif | |
180a34d2 AG |
318 | #ifdef CONFIG_ALTIVEC |
319 | vector128 vr[32]; | |
320 | vector128 vscr; | |
321 | #endif | |
322 | ||
323 | #ifdef CONFIG_VSX | |
de56a948 | 324 | u64 vsr[64]; |
180a34d2 AG |
325 | #endif |
326 | ||
5aa9e2f4 AG |
327 | #ifdef CONFIG_PPC_BOOK3S |
328 | /* For Gekko paired singles */ | |
329 | u32 qpr[32]; | |
330 | #endif | |
331 | ||
5cf8ca22 | 332 | ulong pc; |
5cf8ca22 HB |
333 | ulong ctr; |
334 | ulong lr; | |
7e57cba0 | 335 | |
5cf8ca22 | 336 | ulong xer; |
7e57cba0 | 337 | u32 cr; |
bbf45ba5 | 338 | |
00c3a37c | 339 | #ifdef CONFIG_PPC_BOOK3S |
ca95150b | 340 | ulong hflags; |
180a34d2 | 341 | ulong guest_owned_ext; |
de56a948 PM |
342 | ulong purr; |
343 | ulong spurr; | |
de56a948 PM |
344 | ulong dscr; |
345 | ulong amr; | |
346 | ulong uamor; | |
347 | u32 ctrl; | |
348 | ulong dabr; | |
ca95150b | 349 | #endif |
eab17672 | 350 | u32 vrsave; /* also USPRG0 */ |
bbf45ba5 | 351 | u32 mmucr; |
ecee273f | 352 | ulong shadow_msr; |
5cf8ca22 HB |
353 | ulong csrr0; |
354 | ulong csrr1; | |
355 | ulong dsrr0; | |
356 | ulong dsrr1; | |
5ce941ee SW |
357 | ulong mcsrr0; |
358 | ulong mcsrr1; | |
359 | ulong mcsr; | |
bbf45ba5 HB |
360 | u32 dec; |
361 | u32 decar; | |
362 | u32 tbl; | |
363 | u32 tbu; | |
364 | u32 tcr; | |
dfd4d47e | 365 | ulong tsr; /* we need to perform set/clr_bits() which requires ulong */ |
bb3a8a17 | 366 | u32 ivor[64]; |
5cf8ca22 | 367 | ulong ivpr; |
ca95150b | 368 | u32 pvr; |
49dd2c49 HB |
369 | |
370 | u32 shadow_pid; | |
dd9ebf1f | 371 | u32 shadow_pid1; |
bbf45ba5 | 372 | u32 pid; |
49dd2c49 HB |
373 | u32 swap_pid; |
374 | ||
bbf45ba5 HB |
375 | u32 ccr0; |
376 | u32 ccr1; | |
377 | u32 dbcr0; | |
378 | u32 dbcr1; | |
f7b200af | 379 | u32 dbsr; |
bbf45ba5 | 380 | |
de56a948 | 381 | u64 mmcr[3]; |
9e368f29 | 382 | u32 pmc[8]; |
de56a948 | 383 | |
73e75b41 | 384 | #ifdef CONFIG_KVM_EXIT_TIMING |
09000adb | 385 | struct mutex exit_timing_lock; |
7b701591 HB |
386 | struct kvmppc_exit_timing timing_exit; |
387 | struct kvmppc_exit_timing timing_last_enter; | |
73e75b41 HB |
388 | u32 last_exit_type; |
389 | u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES]; | |
390 | u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES]; | |
391 | u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES]; | |
392 | u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES]; | |
393 | u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES]; | |
394 | u64 timing_last_exit; | |
395 | struct dentry *debugfs_exit_timing; | |
396 | #endif | |
397 | ||
de56a948 PM |
398 | #ifdef CONFIG_PPC_BOOK3S |
399 | ulong fault_dar; | |
400 | u32 fault_dsisr; | |
401 | #endif | |
402 | ||
0604675f | 403 | #ifdef CONFIG_BOOKE |
5cf8ca22 HB |
404 | ulong fault_dear; |
405 | ulong fault_esr; | |
daf5e271 LY |
406 | ulong queued_dear; |
407 | ulong queued_esr; | |
0604675f | 408 | #endif |
bbf45ba5 HB |
409 | gpa_t paddr_accessed; |
410 | ||
411 | u8 io_gpr; /* GPR used as IO source/target */ | |
412 | u8 mmio_is_bigendian; | |
3587d534 | 413 | u8 mmio_sign_extend; |
bbf45ba5 HB |
414 | u8 dcr_needed; |
415 | u8 dcr_is_write; | |
ad0a048b AG |
416 | u8 osi_needed; |
417 | u8 osi_enabled; | |
9432ba60 | 418 | u8 papr_enabled; |
af8f38b3 AG |
419 | u8 sane; |
420 | u8 cpu_type; | |
de56a948 | 421 | u8 hcall_needed; |
bbf45ba5 HB |
422 | |
423 | u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */ | |
424 | ||
544c6761 AG |
425 | struct hrtimer dec_timer; |
426 | struct tasklet_struct tasklet; | |
ca95150b | 427 | u64 dec_jiffies; |
de56a948 | 428 | u64 dec_expires; |
bbf45ba5 | 429 | unsigned long pending_exceptions; |
de56a948 | 430 | u16 last_cpu; |
a8606e20 PM |
431 | u8 ceded; |
432 | u8 prodded; | |
de56a948 | 433 | u32 last_inst; |
a8606e20 PM |
434 | |
435 | struct lppaca *vpa; | |
436 | struct slb_shadow *slb_shadow; | |
437 | struct dtl *dtl; | |
438 | struct dtl *dtl_end; | |
371fefd6 | 439 | |
19ccb76a | 440 | wait_queue_head_t *wqp; |
371fefd6 PM |
441 | struct kvmppc_vcore *vcore; |
442 | int ret; | |
de56a948 | 443 | int trap; |
371fefd6 PM |
444 | int state; |
445 | int ptid; | |
19ccb76a | 446 | bool timer_running; |
371fefd6 PM |
447 | wait_queue_head_t cpu_run; |
448 | ||
96bc451a | 449 | struct kvm_vcpu_arch_shared *shared; |
beb03f14 AG |
450 | unsigned long magic_page_pa; /* phys addr to map the magic page to */ |
451 | unsigned long magic_page_ea; /* effect. addr to map the magic page to */ | |
de56a948 PM |
452 | |
453 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
454 | struct kvm_vcpu_arch_shared shregs; | |
371fefd6 | 455 | |
697d3899 PM |
456 | unsigned long pgfault_addr; |
457 | long pgfault_index; | |
458 | unsigned long pgfault_hpte[2]; | |
459 | ||
371fefd6 PM |
460 | struct list_head run_list; |
461 | struct task_struct *run_task; | |
462 | struct kvm_run *kvm_run; | |
de56a948 | 463 | #endif |
bbf45ba5 HB |
464 | }; |
465 | ||
19ccb76a PM |
466 | /* Values for vcpu->arch.state */ |
467 | #define KVMPPC_VCPU_STOPPED 0 | |
468 | #define KVMPPC_VCPU_BUSY_IN_HOST 1 | |
371fefd6 PM |
469 | #define KVMPPC_VCPU_RUNNABLE 2 |
470 | ||
bbf45ba5 | 471 | #endif /* __POWERPC_KVM_HOST_H__ */ |