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1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. | |
7 | * Authors: Sanjay Lal <sanjayl@kymasys.com> | |
8 | */ | |
9 | ||
10 | #ifndef __MIPS_KVM_HOST_H__ | |
11 | #define __MIPS_KVM_HOST_H__ | |
12 | ||
13 | #include <linux/mutex.h> | |
14 | #include <linux/hrtimer.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/kvm.h> | |
18 | #include <linux/kvm_types.h> | |
19 | #include <linux/threads.h> | |
20 | #include <linux/spinlock.h> | |
21 | ||
22 | ||
23 | #define KVM_MAX_VCPUS 1 | |
24 | #define KVM_USER_MEM_SLOTS 8 | |
25 | /* memory slots that does not exposed to userspace */ | |
26 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
27 | ||
28 | #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 | |
29 | ||
30 | /* Don't support huge pages */ | |
31 | #define KVM_HPAGE_GFN_SHIFT(x) 0 | |
32 | ||
33 | /* We don't currently support large pages. */ | |
34 | #define KVM_NR_PAGE_SIZES 1 | |
35 | #define KVM_PAGES_PER_HPAGE(x) 1 | |
36 | ||
37 | ||
38 | ||
39 | /* Special address that contains the comm page, used for reducing # of traps */ | |
40 | #define KVM_GUEST_COMMPAGE_ADDR 0x0 | |
41 | ||
42 | #define KVM_GUEST_KERNEL_MODE(vcpu) ((kvm_read_c0_guest_status(vcpu->arch.cop0) & (ST0_EXL | ST0_ERL)) || \ | |
43 | ((kvm_read_c0_guest_status(vcpu->arch.cop0) & KSU_USER) == 0)) | |
44 | ||
45 | #define KVM_GUEST_KUSEG 0x00000000UL | |
46 | #define KVM_GUEST_KSEG0 0x40000000UL | |
47 | #define KVM_GUEST_KSEG23 0x60000000UL | |
48 | #define KVM_GUEST_KSEGX(a) ((_ACAST32_(a)) & 0x60000000) | |
49 | #define KVM_GUEST_CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) | |
50 | ||
51 | #define KVM_GUEST_CKSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) | |
52 | #define KVM_GUEST_CKSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) | |
53 | #define KVM_GUEST_CKSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) | |
54 | ||
55 | /* | |
56 | * Map an address to a certain kernel segment | |
57 | */ | |
58 | #define KVM_GUEST_KSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) | |
59 | #define KVM_GUEST_KSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) | |
60 | #define KVM_GUEST_KSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) | |
61 | ||
62 | #define KVM_INVALID_PAGE 0xdeadbeef | |
63 | #define KVM_INVALID_INST 0xdeadbeef | |
64 | #define KVM_INVALID_ADDR 0xdeadbeef | |
65 | ||
66 | #define KVM_MALTA_GUEST_RTC_ADDR 0xb8000070UL | |
67 | ||
68 | #define GUEST_TICKS_PER_JIFFY (40000000/HZ) | |
69 | #define MS_TO_NS(x) (x * 1E6L) | |
70 | ||
71 | #define CAUSEB_DC 27 | |
72 | #define CAUSEF_DC (_ULCAST_(1) << 27) | |
73 | ||
74 | struct kvm; | |
75 | struct kvm_run; | |
76 | struct kvm_vcpu; | |
77 | struct kvm_interrupt; | |
78 | ||
79 | extern atomic_t kvm_mips_instance; | |
80 | extern pfn_t(*kvm_mips_gfn_to_pfn) (struct kvm *kvm, gfn_t gfn); | |
81 | extern void (*kvm_mips_release_pfn_clean) (pfn_t pfn); | |
82 | extern bool(*kvm_mips_is_error_pfn) (pfn_t pfn); | |
83 | ||
84 | struct kvm_vm_stat { | |
85 | u32 remote_tlb_flush; | |
86 | }; | |
87 | ||
88 | struct kvm_vcpu_stat { | |
89 | u32 wait_exits; | |
90 | u32 cache_exits; | |
91 | u32 signal_exits; | |
92 | u32 int_exits; | |
93 | u32 cop_unusable_exits; | |
94 | u32 tlbmod_exits; | |
95 | u32 tlbmiss_ld_exits; | |
96 | u32 tlbmiss_st_exits; | |
97 | u32 addrerr_st_exits; | |
98 | u32 addrerr_ld_exits; | |
99 | u32 syscall_exits; | |
100 | u32 resvd_inst_exits; | |
101 | u32 break_inst_exits; | |
102 | u32 flush_dcache_exits; | |
103 | u32 halt_wakeup; | |
104 | }; | |
105 | ||
106 | enum kvm_mips_exit_types { | |
107 | WAIT_EXITS, | |
108 | CACHE_EXITS, | |
109 | SIGNAL_EXITS, | |
110 | INT_EXITS, | |
111 | COP_UNUSABLE_EXITS, | |
112 | TLBMOD_EXITS, | |
113 | TLBMISS_LD_EXITS, | |
114 | TLBMISS_ST_EXITS, | |
115 | ADDRERR_ST_EXITS, | |
116 | ADDRERR_LD_EXITS, | |
117 | SYSCALL_EXITS, | |
118 | RESVD_INST_EXITS, | |
119 | BREAK_INST_EXITS, | |
120 | FLUSH_DCACHE_EXITS, | |
121 | MAX_KVM_MIPS_EXIT_TYPES | |
122 | }; | |
123 | ||
124 | struct kvm_arch_memory_slot { | |
125 | }; | |
126 | ||
127 | struct kvm_arch { | |
128 | /* Guest GVA->HPA page table */ | |
129 | unsigned long *guest_pmap; | |
130 | unsigned long guest_pmap_npages; | |
131 | ||
132 | /* Wired host TLB used for the commpage */ | |
133 | int commpage_tlb; | |
134 | }; | |
135 | ||
136 | #define N_MIPS_COPROC_REGS 32 | |
137 | #define N_MIPS_COPROC_SEL 8 | |
138 | ||
139 | struct mips_coproc { | |
140 | unsigned long reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; | |
141 | #ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS | |
142 | unsigned long stat[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; | |
143 | #endif | |
144 | }; | |
145 | ||
146 | /* | |
147 | * Coprocessor 0 register names | |
148 | */ | |
149 | #define MIPS_CP0_TLB_INDEX 0 | |
150 | #define MIPS_CP0_TLB_RANDOM 1 | |
151 | #define MIPS_CP0_TLB_LOW 2 | |
152 | #define MIPS_CP0_TLB_LO0 2 | |
153 | #define MIPS_CP0_TLB_LO1 3 | |
154 | #define MIPS_CP0_TLB_CONTEXT 4 | |
155 | #define MIPS_CP0_TLB_PG_MASK 5 | |
156 | #define MIPS_CP0_TLB_WIRED 6 | |
157 | #define MIPS_CP0_HWRENA 7 | |
158 | #define MIPS_CP0_BAD_VADDR 8 | |
159 | #define MIPS_CP0_COUNT 9 | |
160 | #define MIPS_CP0_TLB_HI 10 | |
161 | #define MIPS_CP0_COMPARE 11 | |
162 | #define MIPS_CP0_STATUS 12 | |
163 | #define MIPS_CP0_CAUSE 13 | |
164 | #define MIPS_CP0_EXC_PC 14 | |
165 | #define MIPS_CP0_PRID 15 | |
166 | #define MIPS_CP0_CONFIG 16 | |
167 | #define MIPS_CP0_LLADDR 17 | |
168 | #define MIPS_CP0_WATCH_LO 18 | |
169 | #define MIPS_CP0_WATCH_HI 19 | |
170 | #define MIPS_CP0_TLB_XCONTEXT 20 | |
171 | #define MIPS_CP0_ECC 26 | |
172 | #define MIPS_CP0_CACHE_ERR 27 | |
173 | #define MIPS_CP0_TAG_LO 28 | |
174 | #define MIPS_CP0_TAG_HI 29 | |
175 | #define MIPS_CP0_ERROR_PC 30 | |
176 | #define MIPS_CP0_DEBUG 23 | |
177 | #define MIPS_CP0_DEPC 24 | |
178 | #define MIPS_CP0_PERFCNT 25 | |
179 | #define MIPS_CP0_ERRCTL 26 | |
180 | #define MIPS_CP0_DATA_LO 28 | |
181 | #define MIPS_CP0_DATA_HI 29 | |
182 | #define MIPS_CP0_DESAVE 31 | |
183 | ||
184 | #define MIPS_CP0_CONFIG_SEL 0 | |
185 | #define MIPS_CP0_CONFIG1_SEL 1 | |
186 | #define MIPS_CP0_CONFIG2_SEL 2 | |
187 | #define MIPS_CP0_CONFIG3_SEL 3 | |
188 | ||
189 | /* Config0 register bits */ | |
190 | #define CP0C0_M 31 | |
191 | #define CP0C0_K23 28 | |
192 | #define CP0C0_KU 25 | |
193 | #define CP0C0_MDU 20 | |
194 | #define CP0C0_MM 17 | |
195 | #define CP0C0_BM 16 | |
196 | #define CP0C0_BE 15 | |
197 | #define CP0C0_AT 13 | |
198 | #define CP0C0_AR 10 | |
199 | #define CP0C0_MT 7 | |
200 | #define CP0C0_VI 3 | |
201 | #define CP0C0_K0 0 | |
202 | ||
203 | /* Config1 register bits */ | |
204 | #define CP0C1_M 31 | |
205 | #define CP0C1_MMU 25 | |
206 | #define CP0C1_IS 22 | |
207 | #define CP0C1_IL 19 | |
208 | #define CP0C1_IA 16 | |
209 | #define CP0C1_DS 13 | |
210 | #define CP0C1_DL 10 | |
211 | #define CP0C1_DA 7 | |
212 | #define CP0C1_C2 6 | |
213 | #define CP0C1_MD 5 | |
214 | #define CP0C1_PC 4 | |
215 | #define CP0C1_WR 3 | |
216 | #define CP0C1_CA 2 | |
217 | #define CP0C1_EP 1 | |
218 | #define CP0C1_FP 0 | |
219 | ||
220 | /* Config2 Register bits */ | |
221 | #define CP0C2_M 31 | |
222 | #define CP0C2_TU 28 | |
223 | #define CP0C2_TS 24 | |
224 | #define CP0C2_TL 20 | |
225 | #define CP0C2_TA 16 | |
226 | #define CP0C2_SU 12 | |
227 | #define CP0C2_SS 8 | |
228 | #define CP0C2_SL 4 | |
229 | #define CP0C2_SA 0 | |
230 | ||
231 | /* Config3 Register bits */ | |
232 | #define CP0C3_M 31 | |
233 | #define CP0C3_ISA_ON_EXC 16 | |
234 | #define CP0C3_ULRI 13 | |
235 | #define CP0C3_DSPP 10 | |
236 | #define CP0C3_LPA 7 | |
237 | #define CP0C3_VEIC 6 | |
238 | #define CP0C3_VInt 5 | |
239 | #define CP0C3_SP 4 | |
240 | #define CP0C3_MT 2 | |
241 | #define CP0C3_SM 1 | |
242 | #define CP0C3_TL 0 | |
243 | ||
244 | /* Have config1, Cacheable, noncoherent, write-back, write allocate*/ | |
245 | #define MIPS_CONFIG0 \ | |
246 | ((1 << CP0C0_M) | (0x3 << CP0C0_K0)) | |
247 | ||
248 | /* Have config2, no coprocessor2 attached, no MDMX support attached, | |
249 | no performance counters, watch registers present, | |
250 | no code compression, EJTAG present, no FPU, no watch registers */ | |
251 | #define MIPS_CONFIG1 \ | |
252 | ((1 << CP0C1_M) | \ | |
253 | (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \ | |
254 | (0 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \ | |
255 | (0 << CP0C1_FP)) | |
256 | ||
257 | /* Have config3, no tertiary/secondary caches implemented */ | |
258 | #define MIPS_CONFIG2 \ | |
259 | ((1 << CP0C2_M)) | |
260 | ||
261 | /* No config4, no DSP ASE, no large physaddr (PABITS), | |
262 | no external interrupt controller, no vectored interrupts, | |
263 | no 1kb pages, no SmartMIPS ASE, no trace logic */ | |
264 | #define MIPS_CONFIG3 \ | |
265 | ((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \ | |
266 | (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \ | |
267 | (0 << CP0C3_SM) | (0 << CP0C3_TL)) | |
268 | ||
269 | /* MMU types, the first four entries have the same layout as the | |
270 | CP0C0_MT field. */ | |
271 | enum mips_mmu_types { | |
272 | MMU_TYPE_NONE, | |
273 | MMU_TYPE_R4000, | |
274 | MMU_TYPE_RESERVED, | |
275 | MMU_TYPE_FMT, | |
276 | MMU_TYPE_R3000, | |
277 | MMU_TYPE_R6000, | |
278 | MMU_TYPE_R8000 | |
279 | }; | |
280 | ||
281 | /* | |
282 | * Trap codes | |
283 | */ | |
284 | #define T_INT 0 /* Interrupt pending */ | |
285 | #define T_TLB_MOD 1 /* TLB modified fault */ | |
286 | #define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ | |
287 | #define T_TLB_ST_MISS 3 /* TLB miss on a store */ | |
288 | #define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ | |
289 | #define T_ADDR_ERR_ST 5 /* Address error on a store */ | |
290 | #define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ | |
291 | #define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ | |
292 | #define T_SYSCALL 8 /* System call */ | |
293 | #define T_BREAK 9 /* Breakpoint */ | |
294 | #define T_RES_INST 10 /* Reserved instruction exception */ | |
295 | #define T_COP_UNUSABLE 11 /* Coprocessor unusable */ | |
296 | #define T_OVFLOW 12 /* Arithmetic overflow */ | |
297 | ||
298 | /* | |
299 | * Trap definitions added for r4000 port. | |
300 | */ | |
301 | #define T_TRAP 13 /* Trap instruction */ | |
302 | #define T_VCEI 14 /* Virtual coherency exception */ | |
303 | #define T_FPE 15 /* Floating point exception */ | |
304 | #define T_WATCH 23 /* Watch address reference */ | |
305 | #define T_VCED 31 /* Virtual coherency data */ | |
306 | ||
307 | /* Resume Flags */ | |
308 | #define RESUME_FLAG_DR (1<<0) /* Reload guest nonvolatile state? */ | |
309 | #define RESUME_FLAG_HOST (1<<1) /* Resume host? */ | |
310 | ||
311 | #define RESUME_GUEST 0 | |
312 | #define RESUME_GUEST_DR RESUME_FLAG_DR | |
313 | #define RESUME_HOST RESUME_FLAG_HOST | |
314 | ||
315 | enum emulation_result { | |
316 | EMULATE_DONE, /* no further processing */ | |
317 | EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ | |
318 | EMULATE_FAIL, /* can't emulate this instruction */ | |
319 | EMULATE_WAIT, /* WAIT instruction */ | |
320 | EMULATE_PRIV_FAIL, | |
321 | }; | |
322 | ||
323 | #define MIPS3_PG_G 0x00000001 /* Global; ignore ASID if in lo0 & lo1 */ | |
324 | #define MIPS3_PG_V 0x00000002 /* Valid */ | |
325 | #define MIPS3_PG_NV 0x00000000 | |
326 | #define MIPS3_PG_D 0x00000004 /* Dirty */ | |
327 | ||
328 | #define mips3_paddr_to_tlbpfn(x) \ | |
329 | (((unsigned long)(x) >> MIPS3_PG_SHIFT) & MIPS3_PG_FRAME) | |
330 | #define mips3_tlbpfn_to_paddr(x) \ | |
331 | ((unsigned long)((x) & MIPS3_PG_FRAME) << MIPS3_PG_SHIFT) | |
332 | ||
333 | #define MIPS3_PG_SHIFT 6 | |
334 | #define MIPS3_PG_FRAME 0x3fffffc0 | |
335 | ||
336 | #define VPN2_MASK 0xffffe000 | |
337 | #define TLB_IS_GLOBAL(x) (((x).tlb_lo0 & MIPS3_PG_G) && ((x).tlb_lo1 & MIPS3_PG_G)) | |
338 | #define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK) | |
48c4ac97 | 339 | #define TLB_ASID(x) ((x).tlb_hi & ASID_MASK) |
740765ce SL |
340 | #define TLB_IS_VALID(x, va) (((va) & (1 << PAGE_SHIFT)) ? ((x).tlb_lo1 & MIPS3_PG_V) : ((x).tlb_lo0 & MIPS3_PG_V)) |
341 | ||
342 | struct kvm_mips_tlb { | |
343 | long tlb_mask; | |
344 | long tlb_hi; | |
345 | long tlb_lo0; | |
346 | long tlb_lo1; | |
347 | }; | |
348 | ||
349 | #define KVM_MIPS_GUEST_TLB_SIZE 64 | |
350 | struct kvm_vcpu_arch { | |
351 | void *host_ebase, *guest_ebase; | |
352 | unsigned long host_stack; | |
353 | unsigned long host_gp; | |
354 | ||
355 | /* Host CP0 registers used when handling exits from guest */ | |
356 | unsigned long host_cp0_badvaddr; | |
357 | unsigned long host_cp0_cause; | |
358 | unsigned long host_cp0_epc; | |
359 | unsigned long host_cp0_entryhi; | |
360 | uint32_t guest_inst; | |
361 | ||
362 | /* GPRS */ | |
363 | unsigned long gprs[32]; | |
364 | unsigned long hi; | |
365 | unsigned long lo; | |
366 | unsigned long pc; | |
367 | ||
368 | /* FPU State */ | |
369 | struct mips_fpu_struct fpu; | |
370 | ||
371 | /* COP0 State */ | |
372 | struct mips_coproc *cop0; | |
373 | ||
374 | /* Host KSEG0 address of the EI/DI offset */ | |
375 | void *kseg0_commpage; | |
376 | ||
377 | u32 io_gpr; /* GPR used as IO source/target */ | |
378 | ||
379 | /* Used to calibrate the virutal count register for the guest */ | |
380 | int32_t host_cp0_count; | |
381 | ||
382 | /* Bitmask of exceptions that are pending */ | |
383 | unsigned long pending_exceptions; | |
384 | ||
385 | /* Bitmask of pending exceptions to be cleared */ | |
386 | unsigned long pending_exceptions_clr; | |
387 | ||
388 | unsigned long pending_load_cause; | |
389 | ||
390 | /* Save/Restore the entryhi register when are are preempted/scheduled back in */ | |
391 | unsigned long preempt_entryhi; | |
392 | ||
393 | /* S/W Based TLB for guest */ | |
394 | struct kvm_mips_tlb guest_tlb[KVM_MIPS_GUEST_TLB_SIZE]; | |
395 | ||
396 | /* Cached guest kernel/user ASIDs */ | |
397 | uint32_t guest_user_asid[NR_CPUS]; | |
398 | uint32_t guest_kernel_asid[NR_CPUS]; | |
399 | struct mm_struct guest_kernel_mm, guest_user_mm; | |
400 | ||
401 | struct kvm_mips_tlb shadow_tlb[NR_CPUS][KVM_MIPS_GUEST_TLB_SIZE]; | |
402 | ||
403 | ||
404 | struct hrtimer comparecount_timer; | |
405 | ||
406 | int last_sched_cpu; | |
407 | ||
408 | /* WAIT executed */ | |
409 | int wait; | |
410 | }; | |
411 | ||
412 | ||
413 | #define kvm_read_c0_guest_index(cop0) (cop0->reg[MIPS_CP0_TLB_INDEX][0]) | |
414 | #define kvm_write_c0_guest_index(cop0, val) (cop0->reg[MIPS_CP0_TLB_INDEX][0] = val) | |
415 | #define kvm_read_c0_guest_entrylo0(cop0) (cop0->reg[MIPS_CP0_TLB_LO0][0]) | |
416 | #define kvm_read_c0_guest_entrylo1(cop0) (cop0->reg[MIPS_CP0_TLB_LO1][0]) | |
417 | #define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0]) | |
418 | #define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val)) | |
419 | #define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2]) | |
420 | #define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0]) | |
421 | #define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val)) | |
422 | #define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0]) | |
423 | #define kvm_write_c0_guest_wired(cop0, val) (cop0->reg[MIPS_CP0_TLB_WIRED][0] = (val)) | |
424 | #define kvm_read_c0_guest_badvaddr(cop0) (cop0->reg[MIPS_CP0_BAD_VADDR][0]) | |
425 | #define kvm_write_c0_guest_badvaddr(cop0, val) (cop0->reg[MIPS_CP0_BAD_VADDR][0] = (val)) | |
426 | #define kvm_read_c0_guest_count(cop0) (cop0->reg[MIPS_CP0_COUNT][0]) | |
427 | #define kvm_write_c0_guest_count(cop0, val) (cop0->reg[MIPS_CP0_COUNT][0] = (val)) | |
428 | #define kvm_read_c0_guest_entryhi(cop0) (cop0->reg[MIPS_CP0_TLB_HI][0]) | |
429 | #define kvm_write_c0_guest_entryhi(cop0, val) (cop0->reg[MIPS_CP0_TLB_HI][0] = (val)) | |
430 | #define kvm_read_c0_guest_compare(cop0) (cop0->reg[MIPS_CP0_COMPARE][0]) | |
431 | #define kvm_write_c0_guest_compare(cop0, val) (cop0->reg[MIPS_CP0_COMPARE][0] = (val)) | |
432 | #define kvm_read_c0_guest_status(cop0) (cop0->reg[MIPS_CP0_STATUS][0]) | |
433 | #define kvm_write_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] = (val)) | |
434 | #define kvm_read_c0_guest_intctl(cop0) (cop0->reg[MIPS_CP0_STATUS][1]) | |
435 | #define kvm_write_c0_guest_intctl(cop0, val) (cop0->reg[MIPS_CP0_STATUS][1] = (val)) | |
436 | #define kvm_read_c0_guest_cause(cop0) (cop0->reg[MIPS_CP0_CAUSE][0]) | |
437 | #define kvm_write_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] = (val)) | |
438 | #define kvm_read_c0_guest_epc(cop0) (cop0->reg[MIPS_CP0_EXC_PC][0]) | |
439 | #define kvm_write_c0_guest_epc(cop0, val) (cop0->reg[MIPS_CP0_EXC_PC][0] = (val)) | |
440 | #define kvm_read_c0_guest_prid(cop0) (cop0->reg[MIPS_CP0_PRID][0]) | |
441 | #define kvm_write_c0_guest_prid(cop0, val) (cop0->reg[MIPS_CP0_PRID][0] = (val)) | |
442 | #define kvm_read_c0_guest_ebase(cop0) (cop0->reg[MIPS_CP0_PRID][1]) | |
443 | #define kvm_write_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] = (val)) | |
444 | #define kvm_read_c0_guest_config(cop0) (cop0->reg[MIPS_CP0_CONFIG][0]) | |
445 | #define kvm_read_c0_guest_config1(cop0) (cop0->reg[MIPS_CP0_CONFIG][1]) | |
446 | #define kvm_read_c0_guest_config2(cop0) (cop0->reg[MIPS_CP0_CONFIG][2]) | |
447 | #define kvm_read_c0_guest_config3(cop0) (cop0->reg[MIPS_CP0_CONFIG][3]) | |
448 | #define kvm_read_c0_guest_config7(cop0) (cop0->reg[MIPS_CP0_CONFIG][7]) | |
449 | #define kvm_write_c0_guest_config(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][0] = (val)) | |
450 | #define kvm_write_c0_guest_config1(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][1] = (val)) | |
451 | #define kvm_write_c0_guest_config2(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][2] = (val)) | |
452 | #define kvm_write_c0_guest_config3(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][3] = (val)) | |
453 | #define kvm_write_c0_guest_config7(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][7] = (val)) | |
454 | #define kvm_read_c0_guest_errorepc(cop0) (cop0->reg[MIPS_CP0_ERROR_PC][0]) | |
455 | #define kvm_write_c0_guest_errorepc(cop0, val) (cop0->reg[MIPS_CP0_ERROR_PC][0] = (val)) | |
456 | ||
457 | #define kvm_set_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] |= (val)) | |
458 | #define kvm_clear_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] &= ~(val)) | |
459 | #define kvm_set_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] |= (val)) | |
460 | #define kvm_clear_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] &= ~(val)) | |
461 | #define kvm_change_c0_guest_cause(cop0, change, val) \ | |
462 | { \ | |
463 | kvm_clear_c0_guest_cause(cop0, change); \ | |
464 | kvm_set_c0_guest_cause(cop0, ((val) & (change))); \ | |
465 | } | |
466 | #define kvm_set_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] |= (val)) | |
467 | #define kvm_clear_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] &= ~(val)) | |
468 | #define kvm_change_c0_guest_ebase(cop0, change, val) \ | |
469 | { \ | |
470 | kvm_clear_c0_guest_ebase(cop0, change); \ | |
471 | kvm_set_c0_guest_ebase(cop0, ((val) & (change))); \ | |
472 | } | |
473 | ||
474 | ||
475 | struct kvm_mips_callbacks { | |
476 | int (*handle_cop_unusable) (struct kvm_vcpu *vcpu); | |
477 | int (*handle_tlb_mod) (struct kvm_vcpu *vcpu); | |
478 | int (*handle_tlb_ld_miss) (struct kvm_vcpu *vcpu); | |
479 | int (*handle_tlb_st_miss) (struct kvm_vcpu *vcpu); | |
480 | int (*handle_addr_err_st) (struct kvm_vcpu *vcpu); | |
481 | int (*handle_addr_err_ld) (struct kvm_vcpu *vcpu); | |
482 | int (*handle_syscall) (struct kvm_vcpu *vcpu); | |
483 | int (*handle_res_inst) (struct kvm_vcpu *vcpu); | |
484 | int (*handle_break) (struct kvm_vcpu *vcpu); | |
485 | int (*vm_init) (struct kvm *kvm); | |
486 | int (*vcpu_init) (struct kvm_vcpu *vcpu); | |
487 | int (*vcpu_setup) (struct kvm_vcpu *vcpu); | |
488 | gpa_t(*gva_to_gpa) (gva_t gva); | |
489 | void (*queue_timer_int) (struct kvm_vcpu *vcpu); | |
490 | void (*dequeue_timer_int) (struct kvm_vcpu *vcpu); | |
491 | void (*queue_io_int) (struct kvm_vcpu *vcpu, | |
492 | struct kvm_mips_interrupt *irq); | |
493 | void (*dequeue_io_int) (struct kvm_vcpu *vcpu, | |
494 | struct kvm_mips_interrupt *irq); | |
495 | int (*irq_deliver) (struct kvm_vcpu *vcpu, unsigned int priority, | |
496 | uint32_t cause); | |
497 | int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority, | |
498 | uint32_t cause); | |
740765ce SL |
499 | }; |
500 | extern struct kvm_mips_callbacks *kvm_mips_callbacks; | |
501 | int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks); | |
502 | ||
503 | /* Debug: dump vcpu state */ | |
504 | int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu); | |
505 | ||
506 | /* Trampoline ASM routine to start running in "Guest" context */ | |
507 | extern int __kvm_mips_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
508 | ||
509 | /* TLB handling */ | |
510 | uint32_t kvm_get_kernel_asid(struct kvm_vcpu *vcpu); | |
511 | ||
512 | uint32_t kvm_get_user_asid(struct kvm_vcpu *vcpu); | |
513 | ||
514 | uint32_t kvm_get_commpage_asid (struct kvm_vcpu *vcpu); | |
515 | ||
516 | extern int kvm_mips_handle_kseg0_tlb_fault(unsigned long badbaddr, | |
517 | struct kvm_vcpu *vcpu); | |
518 | ||
519 | extern int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, | |
520 | struct kvm_vcpu *vcpu); | |
521 | ||
522 | extern int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu, | |
523 | struct kvm_mips_tlb *tlb, | |
524 | unsigned long *hpa0, | |
525 | unsigned long *hpa1); | |
526 | ||
527 | extern enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause, | |
528 | uint32_t *opc, | |
529 | struct kvm_run *run, | |
530 | struct kvm_vcpu *vcpu); | |
531 | ||
532 | extern enum emulation_result kvm_mips_handle_tlbmod(unsigned long cause, | |
533 | uint32_t *opc, | |
534 | struct kvm_run *run, | |
535 | struct kvm_vcpu *vcpu); | |
536 | ||
537 | extern void kvm_mips_dump_host_tlbs(void); | |
538 | extern void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu); | |
539 | extern void kvm_mips_dump_shadow_tlbs(struct kvm_vcpu *vcpu); | |
540 | extern void kvm_mips_flush_host_tlb(int skip_kseg0); | |
541 | extern int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long entryhi); | |
542 | extern int kvm_mips_host_tlb_inv_index(struct kvm_vcpu *vcpu, int index); | |
543 | ||
544 | extern int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, | |
545 | unsigned long entryhi); | |
546 | extern int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr); | |
547 | extern unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu, | |
548 | unsigned long gva); | |
549 | extern void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, | |
550 | struct kvm_vcpu *vcpu); | |
551 | extern void kvm_shadow_tlb_put(struct kvm_vcpu *vcpu); | |
552 | extern void kvm_shadow_tlb_load(struct kvm_vcpu *vcpu); | |
553 | extern void kvm_local_flush_tlb_all(void); | |
554 | extern void kvm_mips_init_shadow_tlb(struct kvm_vcpu *vcpu); | |
555 | extern void kvm_mips_alloc_new_mmu_context(struct kvm_vcpu *vcpu); | |
556 | extern void kvm_mips_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
557 | extern void kvm_mips_vcpu_put(struct kvm_vcpu *vcpu); | |
558 | ||
559 | /* Emulation */ | |
560 | uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu); | |
561 | enum emulation_result update_pc(struct kvm_vcpu *vcpu, uint32_t cause); | |
562 | ||
563 | extern enum emulation_result kvm_mips_emulate_inst(unsigned long cause, | |
564 | uint32_t *opc, | |
565 | struct kvm_run *run, | |
566 | struct kvm_vcpu *vcpu); | |
567 | ||
568 | extern enum emulation_result kvm_mips_emulate_syscall(unsigned long cause, | |
569 | uint32_t *opc, | |
570 | struct kvm_run *run, | |
571 | struct kvm_vcpu *vcpu); | |
572 | ||
573 | extern enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause, | |
574 | uint32_t *opc, | |
575 | struct kvm_run *run, | |
576 | struct kvm_vcpu *vcpu); | |
577 | ||
578 | extern enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause, | |
579 | uint32_t *opc, | |
580 | struct kvm_run *run, | |
581 | struct kvm_vcpu *vcpu); | |
582 | ||
583 | extern enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause, | |
584 | uint32_t *opc, | |
585 | struct kvm_run *run, | |
586 | struct kvm_vcpu *vcpu); | |
587 | ||
588 | extern enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause, | |
589 | uint32_t *opc, | |
590 | struct kvm_run *run, | |
591 | struct kvm_vcpu *vcpu); | |
592 | ||
593 | extern enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause, | |
594 | uint32_t *opc, | |
595 | struct kvm_run *run, | |
596 | struct kvm_vcpu *vcpu); | |
597 | ||
598 | extern enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause, | |
599 | uint32_t *opc, | |
600 | struct kvm_run *run, | |
601 | struct kvm_vcpu *vcpu); | |
602 | ||
603 | extern enum emulation_result kvm_mips_handle_ri(unsigned long cause, | |
604 | uint32_t *opc, | |
605 | struct kvm_run *run, | |
606 | struct kvm_vcpu *vcpu); | |
607 | ||
608 | extern enum emulation_result kvm_mips_emulate_ri_exc(unsigned long cause, | |
609 | uint32_t *opc, | |
610 | struct kvm_run *run, | |
611 | struct kvm_vcpu *vcpu); | |
612 | ||
613 | extern enum emulation_result kvm_mips_emulate_bp_exc(unsigned long cause, | |
614 | uint32_t *opc, | |
615 | struct kvm_run *run, | |
616 | struct kvm_vcpu *vcpu); | |
617 | ||
618 | extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, | |
619 | struct kvm_run *run); | |
620 | ||
621 | enum emulation_result kvm_mips_emulate_count(struct kvm_vcpu *vcpu); | |
622 | ||
623 | enum emulation_result kvm_mips_check_privilege(unsigned long cause, | |
624 | uint32_t *opc, | |
625 | struct kvm_run *run, | |
626 | struct kvm_vcpu *vcpu); | |
627 | ||
628 | enum emulation_result kvm_mips_emulate_cache(uint32_t inst, | |
629 | uint32_t *opc, | |
630 | uint32_t cause, | |
631 | struct kvm_run *run, | |
632 | struct kvm_vcpu *vcpu); | |
633 | enum emulation_result kvm_mips_emulate_CP0(uint32_t inst, | |
634 | uint32_t *opc, | |
635 | uint32_t cause, | |
636 | struct kvm_run *run, | |
637 | struct kvm_vcpu *vcpu); | |
638 | enum emulation_result kvm_mips_emulate_store(uint32_t inst, | |
639 | uint32_t cause, | |
640 | struct kvm_run *run, | |
641 | struct kvm_vcpu *vcpu); | |
642 | enum emulation_result kvm_mips_emulate_load(uint32_t inst, | |
643 | uint32_t cause, | |
644 | struct kvm_run *run, | |
645 | struct kvm_vcpu *vcpu); | |
646 | ||
647 | /* Dynamic binary translation */ | |
648 | extern int kvm_mips_trans_cache_index(uint32_t inst, uint32_t *opc, | |
649 | struct kvm_vcpu *vcpu); | |
650 | extern int kvm_mips_trans_cache_va(uint32_t inst, uint32_t *opc, | |
651 | struct kvm_vcpu *vcpu); | |
652 | extern int kvm_mips_trans_mfc0(uint32_t inst, uint32_t *opc, | |
653 | struct kvm_vcpu *vcpu); | |
654 | extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc, | |
655 | struct kvm_vcpu *vcpu); | |
656 | ||
657 | /* Misc */ | |
658 | extern void mips32_SyncICache(unsigned long addr, unsigned long size); | |
659 | extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu); | |
660 | extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm); | |
661 | ||
662 | ||
663 | #endif /* __MIPS_KVM_HOST_H__ */ |