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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
31
32/* Special address that contains the comm page, used for reducing # of traps */
33#define KVM_GUEST_COMMPAGE_ADDR 0x0
34
35#define KVM_GUEST_KERNEL_MODE(vcpu) ((kvm_read_c0_guest_status(vcpu->arch.cop0) & (ST0_EXL | ST0_ERL)) || \
36 ((kvm_read_c0_guest_status(vcpu->arch.cop0) & KSU_USER) == 0))
37
38#define KVM_GUEST_KUSEG 0x00000000UL
39#define KVM_GUEST_KSEG0 0x40000000UL
40#define KVM_GUEST_KSEG23 0x60000000UL
41#define KVM_GUEST_KSEGX(a) ((_ACAST32_(a)) & 0x60000000)
42#define KVM_GUEST_CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff)
43
44#define KVM_GUEST_CKSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0)
45#define KVM_GUEST_CKSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1)
46#define KVM_GUEST_CKSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23)
47
48/*
49 * Map an address to a certain kernel segment
50 */
51#define KVM_GUEST_KSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0)
52#define KVM_GUEST_KSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1)
53#define KVM_GUEST_KSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23)
54
55#define KVM_INVALID_PAGE 0xdeadbeef
56#define KVM_INVALID_INST 0xdeadbeef
57#define KVM_INVALID_ADDR 0xdeadbeef
58
59#define KVM_MALTA_GUEST_RTC_ADDR 0xb8000070UL
60
61#define GUEST_TICKS_PER_JIFFY (40000000/HZ)
62#define MS_TO_NS(x) (x * 1E6L)
63
64#define CAUSEB_DC 27
65#define CAUSEF_DC (_ULCAST_(1) << 27)
66
67struct kvm;
68struct kvm_run;
69struct kvm_vcpu;
70struct kvm_interrupt;
71
72extern atomic_t kvm_mips_instance;
73extern pfn_t(*kvm_mips_gfn_to_pfn) (struct kvm *kvm, gfn_t gfn);
74extern void (*kvm_mips_release_pfn_clean) (pfn_t pfn);
75extern bool(*kvm_mips_is_error_pfn) (pfn_t pfn);
76
77struct kvm_vm_stat {
78 u32 remote_tlb_flush;
79};
80
81struct kvm_vcpu_stat {
82 u32 wait_exits;
83 u32 cache_exits;
84 u32 signal_exits;
85 u32 int_exits;
86 u32 cop_unusable_exits;
87 u32 tlbmod_exits;
88 u32 tlbmiss_ld_exits;
89 u32 tlbmiss_st_exits;
90 u32 addrerr_st_exits;
91 u32 addrerr_ld_exits;
92 u32 syscall_exits;
93 u32 resvd_inst_exits;
94 u32 break_inst_exits;
95 u32 flush_dcache_exits;
96 u32 halt_wakeup;
97};
98
99enum kvm_mips_exit_types {
100 WAIT_EXITS,
101 CACHE_EXITS,
102 SIGNAL_EXITS,
103 INT_EXITS,
104 COP_UNUSABLE_EXITS,
105 TLBMOD_EXITS,
106 TLBMISS_LD_EXITS,
107 TLBMISS_ST_EXITS,
108 ADDRERR_ST_EXITS,
109 ADDRERR_LD_EXITS,
110 SYSCALL_EXITS,
111 RESVD_INST_EXITS,
112 BREAK_INST_EXITS,
113 FLUSH_DCACHE_EXITS,
114 MAX_KVM_MIPS_EXIT_TYPES
115};
116
117struct kvm_arch_memory_slot {
118};
119
120struct kvm_arch {
121 /* Guest GVA->HPA page table */
122 unsigned long *guest_pmap;
123 unsigned long guest_pmap_npages;
124
125 /* Wired host TLB used for the commpage */
126 int commpage_tlb;
127};
128
129#define N_MIPS_COPROC_REGS 32
130#define N_MIPS_COPROC_SEL 8
131
132struct mips_coproc {
133 unsigned long reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL];
134#ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS
135 unsigned long stat[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL];
136#endif
137};
138
139/*
140 * Coprocessor 0 register names
141 */
142#define MIPS_CP0_TLB_INDEX 0
143#define MIPS_CP0_TLB_RANDOM 1
144#define MIPS_CP0_TLB_LOW 2
145#define MIPS_CP0_TLB_LO0 2
146#define MIPS_CP0_TLB_LO1 3
147#define MIPS_CP0_TLB_CONTEXT 4
148#define MIPS_CP0_TLB_PG_MASK 5
149#define MIPS_CP0_TLB_WIRED 6
150#define MIPS_CP0_HWRENA 7
151#define MIPS_CP0_BAD_VADDR 8
152#define MIPS_CP0_COUNT 9
153#define MIPS_CP0_TLB_HI 10
154#define MIPS_CP0_COMPARE 11
155#define MIPS_CP0_STATUS 12
156#define MIPS_CP0_CAUSE 13
157#define MIPS_CP0_EXC_PC 14
158#define MIPS_CP0_PRID 15
159#define MIPS_CP0_CONFIG 16
160#define MIPS_CP0_LLADDR 17
161#define MIPS_CP0_WATCH_LO 18
162#define MIPS_CP0_WATCH_HI 19
163#define MIPS_CP0_TLB_XCONTEXT 20
164#define MIPS_CP0_ECC 26
165#define MIPS_CP0_CACHE_ERR 27
166#define MIPS_CP0_TAG_LO 28
167#define MIPS_CP0_TAG_HI 29
168#define MIPS_CP0_ERROR_PC 30
169#define MIPS_CP0_DEBUG 23
170#define MIPS_CP0_DEPC 24
171#define MIPS_CP0_PERFCNT 25
172#define MIPS_CP0_ERRCTL 26
173#define MIPS_CP0_DATA_LO 28
174#define MIPS_CP0_DATA_HI 29
175#define MIPS_CP0_DESAVE 31
176
177#define MIPS_CP0_CONFIG_SEL 0
178#define MIPS_CP0_CONFIG1_SEL 1
179#define MIPS_CP0_CONFIG2_SEL 2
180#define MIPS_CP0_CONFIG3_SEL 3
181
182/* Config0 register bits */
183#define CP0C0_M 31
184#define CP0C0_K23 28
185#define CP0C0_KU 25
186#define CP0C0_MDU 20
187#define CP0C0_MM 17
188#define CP0C0_BM 16
189#define CP0C0_BE 15
190#define CP0C0_AT 13
191#define CP0C0_AR 10
192#define CP0C0_MT 7
193#define CP0C0_VI 3
194#define CP0C0_K0 0
195
196/* Config1 register bits */
197#define CP0C1_M 31
198#define CP0C1_MMU 25
199#define CP0C1_IS 22
200#define CP0C1_IL 19
201#define CP0C1_IA 16
202#define CP0C1_DS 13
203#define CP0C1_DL 10
204#define CP0C1_DA 7
205#define CP0C1_C2 6
206#define CP0C1_MD 5
207#define CP0C1_PC 4
208#define CP0C1_WR 3
209#define CP0C1_CA 2
210#define CP0C1_EP 1
211#define CP0C1_FP 0
212
213/* Config2 Register bits */
214#define CP0C2_M 31
215#define CP0C2_TU 28
216#define CP0C2_TS 24
217#define CP0C2_TL 20
218#define CP0C2_TA 16
219#define CP0C2_SU 12
220#define CP0C2_SS 8
221#define CP0C2_SL 4
222#define CP0C2_SA 0
223
224/* Config3 Register bits */
225#define CP0C3_M 31
226#define CP0C3_ISA_ON_EXC 16
227#define CP0C3_ULRI 13
228#define CP0C3_DSPP 10
229#define CP0C3_LPA 7
230#define CP0C3_VEIC 6
231#define CP0C3_VInt 5
232#define CP0C3_SP 4
233#define CP0C3_MT 2
234#define CP0C3_SM 1
235#define CP0C3_TL 0
236
237/* Have config1, Cacheable, noncoherent, write-back, write allocate*/
238#define MIPS_CONFIG0 \
239 ((1 << CP0C0_M) | (0x3 << CP0C0_K0))
240
241/* Have config2, no coprocessor2 attached, no MDMX support attached,
242 no performance counters, watch registers present,
243 no code compression, EJTAG present, no FPU, no watch registers */
244#define MIPS_CONFIG1 \
245((1 << CP0C1_M) | \
246 (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \
247 (0 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \
248 (0 << CP0C1_FP))
249
250/* Have config3, no tertiary/secondary caches implemented */
251#define MIPS_CONFIG2 \
252((1 << CP0C2_M))
253
254/* No config4, no DSP ASE, no large physaddr (PABITS),
255 no external interrupt controller, no vectored interrupts,
256 no 1kb pages, no SmartMIPS ASE, no trace logic */
257#define MIPS_CONFIG3 \
258((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \
259 (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \
260 (0 << CP0C3_SM) | (0 << CP0C3_TL))
261
262/* MMU types, the first four entries have the same layout as the
263 CP0C0_MT field. */
264enum mips_mmu_types {
265 MMU_TYPE_NONE,
266 MMU_TYPE_R4000,
267 MMU_TYPE_RESERVED,
268 MMU_TYPE_FMT,
269 MMU_TYPE_R3000,
270 MMU_TYPE_R6000,
271 MMU_TYPE_R8000
272};
273
274/*
275 * Trap codes
276 */
277#define T_INT 0 /* Interrupt pending */
278#define T_TLB_MOD 1 /* TLB modified fault */
279#define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */
280#define T_TLB_ST_MISS 3 /* TLB miss on a store */
281#define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */
282#define T_ADDR_ERR_ST 5 /* Address error on a store */
283#define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */
284#define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */
285#define T_SYSCALL 8 /* System call */
286#define T_BREAK 9 /* Breakpoint */
287#define T_RES_INST 10 /* Reserved instruction exception */
288#define T_COP_UNUSABLE 11 /* Coprocessor unusable */
289#define T_OVFLOW 12 /* Arithmetic overflow */
290
291/*
292 * Trap definitions added for r4000 port.
293 */
294#define T_TRAP 13 /* Trap instruction */
295#define T_VCEI 14 /* Virtual coherency exception */
296#define T_FPE 15 /* Floating point exception */
297#define T_WATCH 23 /* Watch address reference */
298#define T_VCED 31 /* Virtual coherency data */
299
300/* Resume Flags */
301#define RESUME_FLAG_DR (1<<0) /* Reload guest nonvolatile state? */
302#define RESUME_FLAG_HOST (1<<1) /* Resume host? */
303
304#define RESUME_GUEST 0
305#define RESUME_GUEST_DR RESUME_FLAG_DR
306#define RESUME_HOST RESUME_FLAG_HOST
307
308enum emulation_result {
309 EMULATE_DONE, /* no further processing */
310 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
311 EMULATE_FAIL, /* can't emulate this instruction */
312 EMULATE_WAIT, /* WAIT instruction */
313 EMULATE_PRIV_FAIL,
314};
315
316#define MIPS3_PG_G 0x00000001 /* Global; ignore ASID if in lo0 & lo1 */
317#define MIPS3_PG_V 0x00000002 /* Valid */
318#define MIPS3_PG_NV 0x00000000
319#define MIPS3_PG_D 0x00000004 /* Dirty */
320
321#define mips3_paddr_to_tlbpfn(x) \
322 (((unsigned long)(x) >> MIPS3_PG_SHIFT) & MIPS3_PG_FRAME)
323#define mips3_tlbpfn_to_paddr(x) \
324 ((unsigned long)((x) & MIPS3_PG_FRAME) << MIPS3_PG_SHIFT)
325
326#define MIPS3_PG_SHIFT 6
327#define MIPS3_PG_FRAME 0x3fffffc0
328
329#define VPN2_MASK 0xffffe000
330#define TLB_IS_GLOBAL(x) (((x).tlb_lo0 & MIPS3_PG_G) && \
331 ((x).tlb_lo1 & MIPS3_PG_G))
332#define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK)
333#define TLB_ASID(x) ((x).tlb_hi & ASID_MASK)
334#define TLB_IS_VALID(x, va) (((va) & (1 << PAGE_SHIFT)) \
335 ? ((x).tlb_lo1 & MIPS3_PG_V) \
336 : ((x).tlb_lo0 & MIPS3_PG_V))
337
338struct kvm_mips_tlb {
339 long tlb_mask;
340 long tlb_hi;
341 long tlb_lo0;
342 long tlb_lo1;
343};
344
345#define KVM_MIPS_GUEST_TLB_SIZE 64
346struct kvm_vcpu_arch {
347 void *host_ebase, *guest_ebase;
348 unsigned long host_stack;
349 unsigned long host_gp;
350
351 /* Host CP0 registers used when handling exits from guest */
352 unsigned long host_cp0_badvaddr;
353 unsigned long host_cp0_cause;
354 unsigned long host_cp0_epc;
355 unsigned long host_cp0_entryhi;
356 uint32_t guest_inst;
357
358 /* GPRS */
359 unsigned long gprs[32];
360 unsigned long hi;
361 unsigned long lo;
362 unsigned long pc;
363
364 /* FPU State */
365 struct mips_fpu_struct fpu;
366
367 /* COP0 State */
368 struct mips_coproc *cop0;
369
370 /* Host KSEG0 address of the EI/DI offset */
371 void *kseg0_commpage;
372
373 u32 io_gpr; /* GPR used as IO source/target */
374
375 /* Used to calibrate the virutal count register for the guest */
376 int32_t host_cp0_count;
377
378 /* Bitmask of exceptions that are pending */
379 unsigned long pending_exceptions;
380
381 /* Bitmask of pending exceptions to be cleared */
382 unsigned long pending_exceptions_clr;
383
384 unsigned long pending_load_cause;
385
386 /* Save/Restore the entryhi register when are are preempted/scheduled back in */
387 unsigned long preempt_entryhi;
388
389 /* S/W Based TLB for guest */
390 struct kvm_mips_tlb guest_tlb[KVM_MIPS_GUEST_TLB_SIZE];
391
392 /* Cached guest kernel/user ASIDs */
393 uint32_t guest_user_asid[NR_CPUS];
394 uint32_t guest_kernel_asid[NR_CPUS];
395 struct mm_struct guest_kernel_mm, guest_user_mm;
396
397 struct hrtimer comparecount_timer;
398
399 int last_sched_cpu;
400
401 /* WAIT executed */
402 int wait;
403};
404
405
406#define kvm_read_c0_guest_index(cop0) (cop0->reg[MIPS_CP0_TLB_INDEX][0])
407#define kvm_write_c0_guest_index(cop0, val) (cop0->reg[MIPS_CP0_TLB_INDEX][0] = val)
408#define kvm_read_c0_guest_entrylo0(cop0) (cop0->reg[MIPS_CP0_TLB_LO0][0])
409#define kvm_read_c0_guest_entrylo1(cop0) (cop0->reg[MIPS_CP0_TLB_LO1][0])
410#define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0])
411#define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val))
412#define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2])
413#define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0])
414#define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val))
415#define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0])
416#define kvm_write_c0_guest_wired(cop0, val) (cop0->reg[MIPS_CP0_TLB_WIRED][0] = (val))
417#define kvm_read_c0_guest_hwrena(cop0) (cop0->reg[MIPS_CP0_HWRENA][0])
418#define kvm_write_c0_guest_hwrena(cop0, val) (cop0->reg[MIPS_CP0_HWRENA][0] = (val))
419#define kvm_read_c0_guest_badvaddr(cop0) (cop0->reg[MIPS_CP0_BAD_VADDR][0])
420#define kvm_write_c0_guest_badvaddr(cop0, val) (cop0->reg[MIPS_CP0_BAD_VADDR][0] = (val))
421#define kvm_read_c0_guest_count(cop0) (cop0->reg[MIPS_CP0_COUNT][0])
422#define kvm_write_c0_guest_count(cop0, val) (cop0->reg[MIPS_CP0_COUNT][0] = (val))
423#define kvm_read_c0_guest_entryhi(cop0) (cop0->reg[MIPS_CP0_TLB_HI][0])
424#define kvm_write_c0_guest_entryhi(cop0, val) (cop0->reg[MIPS_CP0_TLB_HI][0] = (val))
425#define kvm_read_c0_guest_compare(cop0) (cop0->reg[MIPS_CP0_COMPARE][0])
426#define kvm_write_c0_guest_compare(cop0, val) (cop0->reg[MIPS_CP0_COMPARE][0] = (val))
427#define kvm_read_c0_guest_status(cop0) (cop0->reg[MIPS_CP0_STATUS][0])
428#define kvm_write_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] = (val))
429#define kvm_read_c0_guest_intctl(cop0) (cop0->reg[MIPS_CP0_STATUS][1])
430#define kvm_write_c0_guest_intctl(cop0, val) (cop0->reg[MIPS_CP0_STATUS][1] = (val))
431#define kvm_read_c0_guest_cause(cop0) (cop0->reg[MIPS_CP0_CAUSE][0])
432#define kvm_write_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] = (val))
433#define kvm_read_c0_guest_epc(cop0) (cop0->reg[MIPS_CP0_EXC_PC][0])
434#define kvm_write_c0_guest_epc(cop0, val) (cop0->reg[MIPS_CP0_EXC_PC][0] = (val))
435#define kvm_read_c0_guest_prid(cop0) (cop0->reg[MIPS_CP0_PRID][0])
436#define kvm_write_c0_guest_prid(cop0, val) (cop0->reg[MIPS_CP0_PRID][0] = (val))
437#define kvm_read_c0_guest_ebase(cop0) (cop0->reg[MIPS_CP0_PRID][1])
438#define kvm_write_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] = (val))
439#define kvm_read_c0_guest_config(cop0) (cop0->reg[MIPS_CP0_CONFIG][0])
440#define kvm_read_c0_guest_config1(cop0) (cop0->reg[MIPS_CP0_CONFIG][1])
441#define kvm_read_c0_guest_config2(cop0) (cop0->reg[MIPS_CP0_CONFIG][2])
442#define kvm_read_c0_guest_config3(cop0) (cop0->reg[MIPS_CP0_CONFIG][3])
443#define kvm_read_c0_guest_config7(cop0) (cop0->reg[MIPS_CP0_CONFIG][7])
444#define kvm_write_c0_guest_config(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][0] = (val))
445#define kvm_write_c0_guest_config1(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][1] = (val))
446#define kvm_write_c0_guest_config2(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][2] = (val))
447#define kvm_write_c0_guest_config3(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][3] = (val))
448#define kvm_write_c0_guest_config7(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][7] = (val))
449#define kvm_read_c0_guest_errorepc(cop0) (cop0->reg[MIPS_CP0_ERROR_PC][0])
450#define kvm_write_c0_guest_errorepc(cop0, val) (cop0->reg[MIPS_CP0_ERROR_PC][0] = (val))
451
452#define kvm_set_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] |= (val))
453#define kvm_clear_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] &= ~(val))
454#define kvm_set_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] |= (val))
455#define kvm_clear_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] &= ~(val))
456#define kvm_change_c0_guest_cause(cop0, change, val) \
457{ \
458 kvm_clear_c0_guest_cause(cop0, change); \
459 kvm_set_c0_guest_cause(cop0, ((val) & (change))); \
460}
461#define kvm_set_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] |= (val))
462#define kvm_clear_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] &= ~(val))
463#define kvm_change_c0_guest_ebase(cop0, change, val) \
464{ \
465 kvm_clear_c0_guest_ebase(cop0, change); \
466 kvm_set_c0_guest_ebase(cop0, ((val) & (change))); \
467}
468
469
470struct kvm_mips_callbacks {
471 int (*handle_cop_unusable) (struct kvm_vcpu *vcpu);
472 int (*handle_tlb_mod) (struct kvm_vcpu *vcpu);
473 int (*handle_tlb_ld_miss) (struct kvm_vcpu *vcpu);
474 int (*handle_tlb_st_miss) (struct kvm_vcpu *vcpu);
475 int (*handle_addr_err_st) (struct kvm_vcpu *vcpu);
476 int (*handle_addr_err_ld) (struct kvm_vcpu *vcpu);
477 int (*handle_syscall) (struct kvm_vcpu *vcpu);
478 int (*handle_res_inst) (struct kvm_vcpu *vcpu);
479 int (*handle_break) (struct kvm_vcpu *vcpu);
480 int (*vm_init) (struct kvm *kvm);
481 int (*vcpu_init) (struct kvm_vcpu *vcpu);
482 int (*vcpu_setup) (struct kvm_vcpu *vcpu);
483 gpa_t(*gva_to_gpa) (gva_t gva);
484 void (*queue_timer_int) (struct kvm_vcpu *vcpu);
485 void (*dequeue_timer_int) (struct kvm_vcpu *vcpu);
486 void (*queue_io_int) (struct kvm_vcpu *vcpu,
487 struct kvm_mips_interrupt *irq);
488 void (*dequeue_io_int) (struct kvm_vcpu *vcpu,
489 struct kvm_mips_interrupt *irq);
490 int (*irq_deliver) (struct kvm_vcpu *vcpu, unsigned int priority,
491 uint32_t cause);
492 int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority,
493 uint32_t cause);
494};
495extern struct kvm_mips_callbacks *kvm_mips_callbacks;
496int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks);
497
498/* Debug: dump vcpu state */
499int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu);
500
501/* Trampoline ASM routine to start running in "Guest" context */
502extern int __kvm_mips_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu);
503
504/* TLB handling */
505uint32_t kvm_get_kernel_asid(struct kvm_vcpu *vcpu);
506
507uint32_t kvm_get_user_asid(struct kvm_vcpu *vcpu);
508
509uint32_t kvm_get_commpage_asid (struct kvm_vcpu *vcpu);
510
511extern int kvm_mips_handle_kseg0_tlb_fault(unsigned long badbaddr,
512 struct kvm_vcpu *vcpu);
513
514extern int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr,
515 struct kvm_vcpu *vcpu);
516
517extern int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
518 struct kvm_mips_tlb *tlb,
519 unsigned long *hpa0,
520 unsigned long *hpa1);
521
522extern enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause,
523 uint32_t *opc,
524 struct kvm_run *run,
525 struct kvm_vcpu *vcpu);
526
527extern enum emulation_result kvm_mips_handle_tlbmod(unsigned long cause,
528 uint32_t *opc,
529 struct kvm_run *run,
530 struct kvm_vcpu *vcpu);
531
532extern void kvm_mips_dump_host_tlbs(void);
533extern void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu);
534extern void kvm_mips_flush_host_tlb(int skip_kseg0);
535extern int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long entryhi);
536extern int kvm_mips_host_tlb_inv_index(struct kvm_vcpu *vcpu, int index);
537
538extern int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu,
539 unsigned long entryhi);
540extern int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr);
541extern unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu,
542 unsigned long gva);
543extern void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu,
544 struct kvm_vcpu *vcpu);
545extern void kvm_local_flush_tlb_all(void);
546extern void kvm_mips_alloc_new_mmu_context(struct kvm_vcpu *vcpu);
547extern void kvm_mips_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
548extern void kvm_mips_vcpu_put(struct kvm_vcpu *vcpu);
549
550/* Emulation */
551uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu);
552enum emulation_result update_pc(struct kvm_vcpu *vcpu, uint32_t cause);
553
554extern enum emulation_result kvm_mips_emulate_inst(unsigned long cause,
555 uint32_t *opc,
556 struct kvm_run *run,
557 struct kvm_vcpu *vcpu);
558
559extern enum emulation_result kvm_mips_emulate_syscall(unsigned long cause,
560 uint32_t *opc,
561 struct kvm_run *run,
562 struct kvm_vcpu *vcpu);
563
564extern enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause,
565 uint32_t *opc,
566 struct kvm_run *run,
567 struct kvm_vcpu *vcpu);
568
569extern enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause,
570 uint32_t *opc,
571 struct kvm_run *run,
572 struct kvm_vcpu *vcpu);
573
574extern enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause,
575 uint32_t *opc,
576 struct kvm_run *run,
577 struct kvm_vcpu *vcpu);
578
579extern enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause,
580 uint32_t *opc,
581 struct kvm_run *run,
582 struct kvm_vcpu *vcpu);
583
584extern enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause,
585 uint32_t *opc,
586 struct kvm_run *run,
587 struct kvm_vcpu *vcpu);
588
589extern enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause,
590 uint32_t *opc,
591 struct kvm_run *run,
592 struct kvm_vcpu *vcpu);
593
594extern enum emulation_result kvm_mips_handle_ri(unsigned long cause,
595 uint32_t *opc,
596 struct kvm_run *run,
597 struct kvm_vcpu *vcpu);
598
599extern enum emulation_result kvm_mips_emulate_ri_exc(unsigned long cause,
600 uint32_t *opc,
601 struct kvm_run *run,
602 struct kvm_vcpu *vcpu);
603
604extern enum emulation_result kvm_mips_emulate_bp_exc(unsigned long cause,
605 uint32_t *opc,
606 struct kvm_run *run,
607 struct kvm_vcpu *vcpu);
608
609extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu,
610 struct kvm_run *run);
611
612enum emulation_result kvm_mips_emulate_count(struct kvm_vcpu *vcpu);
613
614enum emulation_result kvm_mips_check_privilege(unsigned long cause,
615 uint32_t *opc,
616 struct kvm_run *run,
617 struct kvm_vcpu *vcpu);
618
619enum emulation_result kvm_mips_emulate_cache(uint32_t inst,
620 uint32_t *opc,
621 uint32_t cause,
622 struct kvm_run *run,
623 struct kvm_vcpu *vcpu);
624enum emulation_result kvm_mips_emulate_CP0(uint32_t inst,
625 uint32_t *opc,
626 uint32_t cause,
627 struct kvm_run *run,
628 struct kvm_vcpu *vcpu);
629enum emulation_result kvm_mips_emulate_store(uint32_t inst,
630 uint32_t cause,
631 struct kvm_run *run,
632 struct kvm_vcpu *vcpu);
633enum emulation_result kvm_mips_emulate_load(uint32_t inst,
634 uint32_t cause,
635 struct kvm_run *run,
636 struct kvm_vcpu *vcpu);
637
638/* Dynamic binary translation */
639extern int kvm_mips_trans_cache_index(uint32_t inst, uint32_t *opc,
640 struct kvm_vcpu *vcpu);
641extern int kvm_mips_trans_cache_va(uint32_t inst, uint32_t *opc,
642 struct kvm_vcpu *vcpu);
643extern int kvm_mips_trans_mfc0(uint32_t inst, uint32_t *opc,
644 struct kvm_vcpu *vcpu);
645extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc,
646 struct kvm_vcpu *vcpu);
647
648/* Misc */
649extern void mips32_SyncICache(unsigned long addr, unsigned long size);
650extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu);
651extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);
652
653
654#endif /* __MIPS_KVM_HOST_H__ */