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Commit | Line | Data |
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7ba0e95b AM |
1 | /* |
2 | * MIPS internal definitions and helpers | |
26aa3d9a PMD |
3 | * |
4 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
5 | * See the COPYING file in the top-level directory. | |
6 | */ | |
7 | ||
8 | #ifndef MIPS_INTERNAL_H | |
9 | #define MIPS_INTERNAL_H | |
10 | ||
34cffe96 | 11 | #include "exec/memattrs.h" |
41da212c | 12 | |
7ba0e95b AM |
13 | /* |
14 | * MMU types, the first four entries have the same layout as the | |
15 | * CP0C0_MT field. | |
16 | */ | |
41da212c | 17 | enum mips_mmu_types { |
1ab3a0de PMD |
18 | MMU_TYPE_NONE = 0, |
19 | MMU_TYPE_R4000 = 1, /* Standard TLB */ | |
20 | MMU_TYPE_BAT = 2, /* Block Address Translation */ | |
21 | MMU_TYPE_FMT = 3, /* Fixed Mapping */ | |
22 | MMU_TYPE_DVF = 4, /* Dual VTLB and FTLB */ | |
41da212c IM |
23 | MMU_TYPE_R3000, |
24 | MMU_TYPE_R6000, | |
25 | MMU_TYPE_R8000 | |
26 | }; | |
27 | ||
28 | struct mips_def_t { | |
29 | const char *name; | |
30 | int32_t CP0_PRid; | |
31 | int32_t CP0_Config0; | |
32 | int32_t CP0_Config1; | |
33 | int32_t CP0_Config2; | |
34 | int32_t CP0_Config3; | |
35 | int32_t CP0_Config4; | |
36 | int32_t CP0_Config4_rw_bitmask; | |
37 | int32_t CP0_Config5; | |
38 | int32_t CP0_Config5_rw_bitmask; | |
39 | int32_t CP0_Config6; | |
af868995 | 40 | int32_t CP0_Config6_rw_bitmask; |
41da212c | 41 | int32_t CP0_Config7; |
af868995 | 42 | int32_t CP0_Config7_rw_bitmask; |
41da212c IM |
43 | target_ulong CP0_LLAddr_rw_bitmask; |
44 | int CP0_LLAddr_shift; | |
45 | int32_t SYNCI_Step; | |
46 | int32_t CCRes; | |
47 | int32_t CP0_Status_rw_bitmask; | |
48 | int32_t CP0_TCStatus_rw_bitmask; | |
49 | int32_t CP0_SRSCtl; | |
50 | int32_t CP1_fcr0; | |
51 | int32_t CP1_fcr31_rw_bitmask; | |
52 | int32_t CP1_fcr31; | |
53 | int32_t MSAIR; | |
54 | int32_t SEGBITS; | |
55 | int32_t PABITS; | |
56 | int32_t CP0_SRSConf0_rw_bitmask; | |
57 | int32_t CP0_SRSConf0; | |
58 | int32_t CP0_SRSConf1_rw_bitmask; | |
59 | int32_t CP0_SRSConf1; | |
60 | int32_t CP0_SRSConf2_rw_bitmask; | |
61 | int32_t CP0_SRSConf2; | |
62 | int32_t CP0_SRSConf3_rw_bitmask; | |
63 | int32_t CP0_SRSConf3; | |
64 | int32_t CP0_SRSConf4_rw_bitmask; | |
65 | int32_t CP0_SRSConf4; | |
66 | int32_t CP0_PageGrain_rw_bitmask; | |
67 | int32_t CP0_PageGrain; | |
68 | target_ulong CP0_EBaseWG_rw_bitmask; | |
f9c9cd63 | 69 | uint64_t insn_flags; |
41da212c | 70 | enum mips_mmu_types mmu_type; |
5fb2dcd1 | 71 | int32_t SAARP; |
41da212c IM |
72 | }; |
73 | ||
adbf1be3 PMD |
74 | extern const char * const regnames[32]; |
75 | extern const char * const fregnames[32]; | |
76 | ||
41da212c IM |
77 | extern const struct mips_def_t mips_defs[]; |
78 | extern const int mips_defs_number; | |
79 | ||
26aa3d9a PMD |
80 | void mips_cpu_do_interrupt(CPUState *cpu); |
81 | bool mips_cpu_exec_interrupt(CPUState *cpu, int int_req); | |
90c84c56 | 82 | void mips_cpu_dump_state(CPUState *cpu, FILE *f, int flags); |
26aa3d9a | 83 | hwaddr mips_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); |
a010bdbe | 84 | int mips_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); |
26aa3d9a PMD |
85 | int mips_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); |
86 | void mips_cpu_do_unaligned_access(CPUState *cpu, vaddr addr, | |
87 | MMUAccessType access_type, | |
88 | int mmu_idx, uintptr_t retaddr); | |
89 | ||
90 | #if !defined(CONFIG_USER_ONLY) | |
91 | ||
92 | typedef struct r4k_tlb_t r4k_tlb_t; | |
93 | struct r4k_tlb_t { | |
94 | target_ulong VPN; | |
95 | uint32_t PageMask; | |
96 | uint16_t ASID; | |
99029be1 | 97 | uint32_t MMID; |
26aa3d9a PMD |
98 | unsigned int G:1; |
99 | unsigned int C0:3; | |
100 | unsigned int C1:3; | |
101 | unsigned int V0:1; | |
102 | unsigned int V1:1; | |
103 | unsigned int D0:1; | |
104 | unsigned int D1:1; | |
105 | unsigned int XI0:1; | |
106 | unsigned int XI1:1; | |
107 | unsigned int RI0:1; | |
108 | unsigned int RI1:1; | |
109 | unsigned int EHINV:1; | |
110 | uint64_t PFN[2]; | |
111 | }; | |
112 | ||
113 | struct CPUMIPSTLBContext { | |
114 | uint32_t nb_tlb; | |
115 | uint32_t tlb_in_use; | |
116 | int (*map_address)(struct CPUMIPSState *env, hwaddr *physical, int *prot, | |
edbd4992 | 117 | target_ulong address, MMUAccessType access_type); |
26aa3d9a PMD |
118 | void (*helper_tlbwi)(struct CPUMIPSState *env); |
119 | void (*helper_tlbwr)(struct CPUMIPSState *env); | |
120 | void (*helper_tlbp)(struct CPUMIPSState *env); | |
121 | void (*helper_tlbr)(struct CPUMIPSState *env); | |
122 | void (*helper_tlbinv)(struct CPUMIPSState *env); | |
123 | void (*helper_tlbinvf)(struct CPUMIPSState *env); | |
124 | union { | |
125 | struct { | |
126 | r4k_tlb_t tlb[MIPS_TLB_MAX]; | |
127 | } r4k; | |
128 | } mmu; | |
129 | }; | |
130 | ||
131 | int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot, | |
edbd4992 | 132 | target_ulong address, MMUAccessType access_type); |
26aa3d9a | 133 | int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot, |
edbd4992 | 134 | target_ulong address, MMUAccessType access_type); |
26aa3d9a | 135 | int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot, |
edbd4992 | 136 | target_ulong address, MMUAccessType access_type); |
26aa3d9a PMD |
137 | void r4k_helper_tlbwi(CPUMIPSState *env); |
138 | void r4k_helper_tlbwr(CPUMIPSState *env); | |
139 | void r4k_helper_tlbp(CPUMIPSState *env); | |
140 | void r4k_helper_tlbr(CPUMIPSState *env); | |
141 | void r4k_helper_tlbinv(CPUMIPSState *env); | |
142 | void r4k_helper_tlbinvf(CPUMIPSState *env); | |
143 | void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra); | |
2dc29222 | 144 | uint32_t cpu_mips_get_random(CPUMIPSState *env); |
26aa3d9a | 145 | |
4f02a06d PM |
146 | void mips_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, |
147 | vaddr addr, unsigned size, | |
148 | MMUAccessType access_type, | |
149 | int mmu_idx, MemTxAttrs attrs, | |
150 | MemTxResult response, uintptr_t retaddr); | |
26aa3d9a | 151 | hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address, |
48b28c6a | 152 | MMUAccessType access_type); |
26aa3d9a PMD |
153 | #endif |
154 | ||
155 | #define cpu_signal_handler cpu_mips_signal_handler | |
156 | ||
157 | #ifndef CONFIG_USER_ONLY | |
8a9358cc | 158 | extern const VMStateDescription vmstate_mips_cpu; |
26aa3d9a PMD |
159 | #endif |
160 | ||
161 | static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState *env) | |
162 | { | |
163 | return (env->CP0_Status & (1 << CP0St_IE)) && | |
164 | !(env->CP0_Status & (1 << CP0St_EXL)) && | |
165 | !(env->CP0_Status & (1 << CP0St_ERL)) && | |
166 | !(env->hflags & MIPS_HFLAG_DM) && | |
7ba0e95b AM |
167 | /* |
168 | * Note that the TCStatus IXMT field is initialized to zero, | |
169 | * and only MT capable cores can set it to one. So we don't | |
170 | * need to check for MT capabilities here. | |
171 | */ | |
26aa3d9a PMD |
172 | !(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_IXMT)); |
173 | } | |
174 | ||
175 | /* Check if there is pending and not masked out interrupt */ | |
176 | static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState *env) | |
177 | { | |
178 | int32_t pending; | |
179 | int32_t status; | |
180 | bool r; | |
181 | ||
182 | pending = env->CP0_Cause & CP0Ca_IP_mask; | |
183 | status = env->CP0_Status & CP0Ca_IP_mask; | |
184 | ||
185 | if (env->CP0_Config3 & (1 << CP0C3_VEIC)) { | |
7ba0e95b AM |
186 | /* |
187 | * A MIPS configured with a vectorizing external interrupt controller | |
188 | * will feed a vector into the Cause pending lines. The core treats | |
8cdf8869 | 189 | * the status lines as a vector level, not as individual masks. |
7ba0e95b | 190 | */ |
26aa3d9a PMD |
191 | r = pending > status; |
192 | } else { | |
7ba0e95b AM |
193 | /* |
194 | * A MIPS configured with compatibility or VInt (Vectored Interrupts) | |
195 | * treats the pending lines as individual interrupt lines, the status | |
196 | * lines are individual masks. | |
197 | */ | |
26aa3d9a PMD |
198 | r = (pending & status) != 0; |
199 | } | |
200 | return r; | |
201 | } | |
202 | ||
203 | void mips_tcg_init(void); | |
204 | ||
03e4d95c PMD |
205 | void msa_reset(CPUMIPSState *env); |
206 | ||
26aa3d9a | 207 | /* cp0_timer.c */ |
26aa3d9a PMD |
208 | uint32_t cpu_mips_get_count(CPUMIPSState *env); |
209 | void cpu_mips_store_count(CPUMIPSState *env, uint32_t value); | |
210 | void cpu_mips_store_compare(CPUMIPSState *env, uint32_t value); | |
211 | void cpu_mips_start_count(CPUMIPSState *env); | |
212 | void cpu_mips_stop_count(CPUMIPSState *env); | |
213 | ||
214 | /* helper.c */ | |
f2c5b39e | 215 | void mmu_init(CPUMIPSState *env, const mips_def_t *def); |
931d019f RH |
216 | bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
217 | MMUAccessType access_type, int mmu_idx, | |
218 | bool probe, uintptr_t retaddr); | |
26aa3d9a PMD |
219 | |
220 | /* op_helper.c */ | |
074cfcb4 | 221 | void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask); |
26aa3d9a | 222 | |
26aa3d9a PMD |
223 | static inline void restore_pamask(CPUMIPSState *env) |
224 | { | |
225 | if (env->hflags & MIPS_HFLAG_ELPA) { | |
226 | env->PAMask = (1ULL << env->PABITS) - 1; | |
227 | } else { | |
228 | env->PAMask = PAMASK_BASE; | |
229 | } | |
230 | } | |
231 | ||
232 | static inline int mips_vpe_active(CPUMIPSState *env) | |
233 | { | |
234 | int active = 1; | |
235 | ||
236 | /* Check that the VPE is enabled. */ | |
237 | if (!(env->mvp->CP0_MVPControl & (1 << CP0MVPCo_EVP))) { | |
238 | active = 0; | |
239 | } | |
240 | /* Check that the VPE is activated. */ | |
241 | if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_VPA))) { | |
242 | active = 0; | |
243 | } | |
244 | ||
7ba0e95b AM |
245 | /* |
246 | * Now verify that there are active thread contexts in the VPE. | |
247 | * | |
248 | * This assumes the CPU model will internally reschedule threads | |
249 | * if the active one goes to sleep. If there are no threads available | |
250 | * the active one will be in a sleeping state, and we can turn off | |
251 | * the entire VPE. | |
252 | */ | |
26aa3d9a PMD |
253 | if (!(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_A))) { |
254 | /* TC is not activated. */ | |
255 | active = 0; | |
256 | } | |
257 | if (env->active_tc.CP0_TCHalt & 1) { | |
258 | /* TC is in halt state. */ | |
259 | active = 0; | |
260 | } | |
261 | ||
262 | return active; | |
263 | } | |
264 | ||
265 | static inline int mips_vp_active(CPUMIPSState *env) | |
266 | { | |
267 | CPUState *other_cs = first_cpu; | |
268 | ||
269 | /* Check if the VP disabled other VPs (which means the VP is enabled) */ | |
270 | if ((env->CP0_VPControl >> CP0VPCtl_DIS) & 1) { | |
271 | return 1; | |
272 | } | |
273 | ||
274 | /* Check if the virtual processor is disabled due to a DVP */ | |
275 | CPU_FOREACH(other_cs) { | |
276 | MIPSCPU *other_cpu = MIPS_CPU(other_cs); | |
277 | if ((&other_cpu->env != env) && | |
278 | ((other_cpu->env.CP0_VPControl >> CP0VPCtl_DIS) & 1)) { | |
279 | return 0; | |
280 | } | |
281 | } | |
282 | return 1; | |
283 | } | |
284 | ||
285 | static inline void compute_hflags(CPUMIPSState *env) | |
286 | { | |
287 | env->hflags &= ~(MIPS_HFLAG_COP1X | MIPS_HFLAG_64 | MIPS_HFLAG_CP0 | | |
288 | MIPS_HFLAG_F64 | MIPS_HFLAG_FPU | MIPS_HFLAG_KSU | | |
908f6be1 SM |
289 | MIPS_HFLAG_AWRAP | MIPS_HFLAG_DSP | MIPS_HFLAG_DSP_R2 | |
290 | MIPS_HFLAG_DSP_R3 | MIPS_HFLAG_SBRI | MIPS_HFLAG_MSA | | |
59e781fb | 291 | MIPS_HFLAG_FRE | MIPS_HFLAG_ELPA | MIPS_HFLAG_ERL); |
26aa3d9a PMD |
292 | if (env->CP0_Status & (1 << CP0St_ERL)) { |
293 | env->hflags |= MIPS_HFLAG_ERL; | |
294 | } | |
295 | if (!(env->CP0_Status & (1 << CP0St_EXL)) && | |
296 | !(env->CP0_Status & (1 << CP0St_ERL)) && | |
297 | !(env->hflags & MIPS_HFLAG_DM)) { | |
7ba0e95b AM |
298 | env->hflags |= (env->CP0_Status >> CP0St_KSU) & |
299 | MIPS_HFLAG_KSU; | |
26aa3d9a PMD |
300 | } |
301 | #if defined(TARGET_MIPS64) | |
302 | if ((env->insn_flags & ISA_MIPS3) && | |
303 | (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_UM) || | |
304 | (env->CP0_Status & (1 << CP0St_PX)) || | |
305 | (env->CP0_Status & (1 << CP0St_UX)))) { | |
306 | env->hflags |= MIPS_HFLAG_64; | |
307 | } | |
308 | ||
309 | if (!(env->insn_flags & ISA_MIPS3)) { | |
310 | env->hflags |= MIPS_HFLAG_AWRAP; | |
311 | } else if (((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_UM) && | |
312 | !(env->CP0_Status & (1 << CP0St_UX))) { | |
313 | env->hflags |= MIPS_HFLAG_AWRAP; | |
2e211e0a | 314 | } else if (env->insn_flags & ISA_MIPS_R6) { |
26aa3d9a PMD |
315 | /* Address wrapping for Supervisor and Kernel is specified in R6 */ |
316 | if ((((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_SM) && | |
317 | !(env->CP0_Status & (1 << CP0St_SX))) || | |
318 | (((env->hflags & MIPS_HFLAG_KSU) == MIPS_HFLAG_KM) && | |
319 | !(env->CP0_Status & (1 << CP0St_KX)))) { | |
320 | env->hflags |= MIPS_HFLAG_AWRAP; | |
321 | } | |
322 | } | |
323 | #endif | |
324 | if (((env->CP0_Status & (1 << CP0St_CU0)) && | |
2e211e0a | 325 | !(env->insn_flags & ISA_MIPS_R6)) || |
26aa3d9a PMD |
326 | !(env->hflags & MIPS_HFLAG_KSU)) { |
327 | env->hflags |= MIPS_HFLAG_CP0; | |
328 | } | |
329 | if (env->CP0_Status & (1 << CP0St_CU1)) { | |
330 | env->hflags |= MIPS_HFLAG_FPU; | |
331 | } | |
332 | if (env->CP0_Status & (1 << CP0St_FR)) { | |
333 | env->hflags |= MIPS_HFLAG_F64; | |
334 | } | |
335 | if (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_KM) && | |
336 | (env->CP0_Config5 & (1 << CP0C5_SBRI))) { | |
337 | env->hflags |= MIPS_HFLAG_SBRI; | |
338 | } | |
908f6be1 SM |
339 | if (env->insn_flags & ASE_DSP_R3) { |
340 | /* | |
341 | * Our cpu supports DSP R3 ASE, so enable | |
342 | * access to DSP R3 resources. | |
343 | */ | |
59e781fb | 344 | if (env->CP0_Status & (1 << CP0St_MX)) { |
908f6be1 SM |
345 | env->hflags |= MIPS_HFLAG_DSP | MIPS_HFLAG_DSP_R2 | |
346 | MIPS_HFLAG_DSP_R3; | |
59e781fb | 347 | } |
908f6be1 SM |
348 | } else if (env->insn_flags & ASE_DSP_R2) { |
349 | /* | |
350 | * Our cpu supports DSP R2 ASE, so enable | |
351 | * access to DSP R2 resources. | |
352 | */ | |
26aa3d9a | 353 | if (env->CP0_Status & (1 << CP0St_MX)) { |
908f6be1 | 354 | env->hflags |= MIPS_HFLAG_DSP | MIPS_HFLAG_DSP_R2; |
26aa3d9a PMD |
355 | } |
356 | ||
357 | } else if (env->insn_flags & ASE_DSP) { | |
908f6be1 SM |
358 | /* |
359 | * Our cpu supports DSP ASE, so enable | |
360 | * access to DSP resources. | |
361 | */ | |
26aa3d9a PMD |
362 | if (env->CP0_Status & (1 << CP0St_MX)) { |
363 | env->hflags |= MIPS_HFLAG_DSP; | |
364 | } | |
365 | ||
366 | } | |
7a47bae5 | 367 | if (env->insn_flags & ISA_MIPS_R2) { |
26aa3d9a PMD |
368 | if (env->active_fpu.fcr0 & (1 << FCR0_F64)) { |
369 | env->hflags |= MIPS_HFLAG_COP1X; | |
370 | } | |
bbd5e4a2 | 371 | } else if (env->insn_flags & ISA_MIPS_R1) { |
26aa3d9a PMD |
372 | if (env->hflags & MIPS_HFLAG_64) { |
373 | env->hflags |= MIPS_HFLAG_COP1X; | |
374 | } | |
375 | } else if (env->insn_flags & ISA_MIPS4) { | |
7ba0e95b AM |
376 | /* |
377 | * All supported MIPS IV CPUs use the XX (CU3) to enable | |
378 | * and disable the MIPS IV extensions to the MIPS III ISA. | |
379 | * Some other MIPS IV CPUs ignore the bit, so the check here | |
380 | * would be too restrictive for them. | |
381 | */ | |
26aa3d9a PMD |
382 | if (env->CP0_Status & (1U << CP0St_CU3)) { |
383 | env->hflags |= MIPS_HFLAG_COP1X; | |
384 | } | |
385 | } | |
aa314198 | 386 | if (ase_msa_available(env)) { |
26aa3d9a PMD |
387 | if (env->CP0_Config5 & (1 << CP0C5_MSAEn)) { |
388 | env->hflags |= MIPS_HFLAG_MSA; | |
389 | } | |
390 | } | |
391 | if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) { | |
392 | if (env->CP0_Config5 & (1 << CP0C5_FRE)) { | |
393 | env->hflags |= MIPS_HFLAG_FRE; | |
394 | } | |
395 | } | |
396 | if (env->CP0_Config3 & (1 << CP0C3_LPA)) { | |
397 | if (env->CP0_PageGrain & (1 << CP0PG_ELPA)) { | |
398 | env->hflags |= MIPS_HFLAG_ELPA; | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
403 | void cpu_mips_tlb_flush(CPUMIPSState *env); | |
404 | void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc); | |
405 | void cpu_mips_store_status(CPUMIPSState *env, target_ulong val); | |
406 | void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val); | |
407 | ||
e9927723 PMD |
408 | const char *mips_exception_name(int32_t exception); |
409 | ||
26aa3d9a PMD |
410 | void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, uint32_t exception, |
411 | int error_code, uintptr_t pc); | |
412 | ||
413 | static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env, | |
414 | uint32_t exception, | |
415 | uintptr_t pc) | |
416 | { | |
417 | do_raise_exception_err(env, exception, 0, pc); | |
418 | } | |
419 | ||
420 | #endif |