2 * MIPS internal definitions and helpers
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.
8 #ifndef MIPS_INTERNAL_H
9 #define MIPS_INTERNAL_H
11 #include "exec/memattrs.h"
14 * MMU types, the first four entries have the same layout as the
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 */
36 int32_t CP0_Config4_rw_bitmask
;
38 int32_t CP0_Config5_rw_bitmask
;
40 int32_t CP0_Config6_rw_bitmask
;
42 int32_t CP0_Config7_rw_bitmask
;
43 target_ulong CP0_LLAddr_rw_bitmask
;
47 int32_t CP0_Status_rw_bitmask
;
48 int32_t CP0_TCStatus_rw_bitmask
;
51 int32_t CP1_fcr31_rw_bitmask
;
56 int32_t CP0_SRSConf0_rw_bitmask
;
58 int32_t CP0_SRSConf1_rw_bitmask
;
60 int32_t CP0_SRSConf2_rw_bitmask
;
62 int32_t CP0_SRSConf3_rw_bitmask
;
64 int32_t CP0_SRSConf4_rw_bitmask
;
66 int32_t CP0_PageGrain_rw_bitmask
;
67 int32_t CP0_PageGrain
;
68 target_ulong CP0_EBaseWG_rw_bitmask
;
70 enum mips_mmu_types mmu_type
;
74 extern const struct mips_def_t mips_defs
[];
75 extern const int mips_defs_number
;
77 void mips_cpu_do_interrupt(CPUState
*cpu
);
78 bool mips_cpu_exec_interrupt(CPUState
*cpu
, int int_req
);
79 void mips_cpu_dump_state(CPUState
*cpu
, FILE *f
, int flags
);
80 hwaddr
mips_cpu_get_phys_page_debug(CPUState
*cpu
, vaddr addr
);
81 int mips_cpu_gdb_read_register(CPUState
*cpu
, GByteArray
*buf
, int reg
);
82 int mips_cpu_gdb_write_register(CPUState
*cpu
, uint8_t *buf
, int reg
);
83 void mips_cpu_do_unaligned_access(CPUState
*cpu
, vaddr addr
,
84 MMUAccessType access_type
,
85 int mmu_idx
, uintptr_t retaddr
);
87 #if !defined(CONFIG_USER_ONLY)
89 typedef struct r4k_tlb_t r4k_tlb_t
;
106 unsigned int EHINV
:1;
110 struct CPUMIPSTLBContext
{
113 int (*map_address
)(struct CPUMIPSState
*env
, hwaddr
*physical
, int *prot
,
114 target_ulong address
, int rw
, int access_type
);
115 void (*helper_tlbwi
)(struct CPUMIPSState
*env
);
116 void (*helper_tlbwr
)(struct CPUMIPSState
*env
);
117 void (*helper_tlbp
)(struct CPUMIPSState
*env
);
118 void (*helper_tlbr
)(struct CPUMIPSState
*env
);
119 void (*helper_tlbinv
)(struct CPUMIPSState
*env
);
120 void (*helper_tlbinvf
)(struct CPUMIPSState
*env
);
123 r4k_tlb_t tlb
[MIPS_TLB_MAX
];
128 int no_mmu_map_address(CPUMIPSState
*env
, hwaddr
*physical
, int *prot
,
129 target_ulong address
, int rw
, int access_type
);
130 int fixed_mmu_map_address(CPUMIPSState
*env
, hwaddr
*physical
, int *prot
,
131 target_ulong address
, int rw
, int access_type
);
132 int r4k_map_address(CPUMIPSState
*env
, hwaddr
*physical
, int *prot
,
133 target_ulong address
, int rw
, int access_type
);
134 void r4k_helper_tlbwi(CPUMIPSState
*env
);
135 void r4k_helper_tlbwr(CPUMIPSState
*env
);
136 void r4k_helper_tlbp(CPUMIPSState
*env
);
137 void r4k_helper_tlbr(CPUMIPSState
*env
);
138 void r4k_helper_tlbinv(CPUMIPSState
*env
);
139 void r4k_helper_tlbinvf(CPUMIPSState
*env
);
140 void r4k_invalidate_tlb(CPUMIPSState
*env
, int idx
, int use_extra
);
141 uint32_t cpu_mips_get_random(CPUMIPSState
*env
);
143 void mips_cpu_do_transaction_failed(CPUState
*cs
, hwaddr physaddr
,
144 vaddr addr
, unsigned size
,
145 MMUAccessType access_type
,
146 int mmu_idx
, MemTxAttrs attrs
,
147 MemTxResult response
, uintptr_t retaddr
);
148 hwaddr
cpu_mips_translate_address(CPUMIPSState
*env
, target_ulong address
,
152 #define cpu_signal_handler cpu_mips_signal_handler
154 #ifndef CONFIG_USER_ONLY
155 extern const VMStateDescription vmstate_mips_cpu
;
158 static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState
*env
)
160 return (env
->CP0_Status
& (1 << CP0St_IE
)) &&
161 !(env
->CP0_Status
& (1 << CP0St_EXL
)) &&
162 !(env
->CP0_Status
& (1 << CP0St_ERL
)) &&
163 !(env
->hflags
& MIPS_HFLAG_DM
) &&
165 * Note that the TCStatus IXMT field is initialized to zero,
166 * and only MT capable cores can set it to one. So we don't
167 * need to check for MT capabilities here.
169 !(env
->active_tc
.CP0_TCStatus
& (1 << CP0TCSt_IXMT
));
172 /* Check if there is pending and not masked out interrupt */
173 static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState
*env
)
179 pending
= env
->CP0_Cause
& CP0Ca_IP_mask
;
180 status
= env
->CP0_Status
& CP0Ca_IP_mask
;
182 if (env
->CP0_Config3
& (1 << CP0C3_VEIC
)) {
184 * A MIPS configured with a vectorizing external interrupt controller
185 * will feed a vector into the Cause pending lines. The core treats
186 * the status lines as a vector level, not as individual masks.
188 r
= pending
> status
;
191 * A MIPS configured with compatibility or VInt (Vectored Interrupts)
192 * treats the pending lines as individual interrupt lines, the status
193 * lines are individual masks.
195 r
= (pending
& status
) != 0;
200 void mips_tcg_init(void);
203 uint32_t cpu_mips_get_count(CPUMIPSState
*env
);
204 void cpu_mips_store_count(CPUMIPSState
*env
, uint32_t value
);
205 void cpu_mips_store_compare(CPUMIPSState
*env
, uint32_t value
);
206 void cpu_mips_start_count(CPUMIPSState
*env
);
207 void cpu_mips_stop_count(CPUMIPSState
*env
);
210 bool mips_cpu_tlb_fill(CPUState
*cs
, vaddr address
, int size
,
211 MMUAccessType access_type
, int mmu_idx
,
212 bool probe
, uintptr_t retaddr
);
215 void update_pagemask(CPUMIPSState
*env
, target_ulong arg1
, int32_t *pagemask
);
217 static inline void restore_pamask(CPUMIPSState
*env
)
219 if (env
->hflags
& MIPS_HFLAG_ELPA
) {
220 env
->PAMask
= (1ULL << env
->PABITS
) - 1;
222 env
->PAMask
= PAMASK_BASE
;
226 static inline int mips_vpe_active(CPUMIPSState
*env
)
230 /* Check that the VPE is enabled. */
231 if (!(env
->mvp
->CP0_MVPControl
& (1 << CP0MVPCo_EVP
))) {
234 /* Check that the VPE is activated. */
235 if (!(env
->CP0_VPEConf0
& (1 << CP0VPEC0_VPA
))) {
240 * Now verify that there are active thread contexts in the VPE.
242 * This assumes the CPU model will internally reschedule threads
243 * if the active one goes to sleep. If there are no threads available
244 * the active one will be in a sleeping state, and we can turn off
247 if (!(env
->active_tc
.CP0_TCStatus
& (1 << CP0TCSt_A
))) {
248 /* TC is not activated. */
251 if (env
->active_tc
.CP0_TCHalt
& 1) {
252 /* TC is in halt state. */
259 static inline int mips_vp_active(CPUMIPSState
*env
)
261 CPUState
*other_cs
= first_cpu
;
263 /* Check if the VP disabled other VPs (which means the VP is enabled) */
264 if ((env
->CP0_VPControl
>> CP0VPCtl_DIS
) & 1) {
268 /* Check if the virtual processor is disabled due to a DVP */
269 CPU_FOREACH(other_cs
) {
270 MIPSCPU
*other_cpu
= MIPS_CPU(other_cs
);
271 if ((&other_cpu
->env
!= env
) &&
272 ((other_cpu
->env
.CP0_VPControl
>> CP0VPCtl_DIS
) & 1)) {
279 static inline void compute_hflags(CPUMIPSState
*env
)
281 env
->hflags
&= ~(MIPS_HFLAG_COP1X
| MIPS_HFLAG_64
| MIPS_HFLAG_CP0
|
282 MIPS_HFLAG_F64
| MIPS_HFLAG_FPU
| MIPS_HFLAG_KSU
|
283 MIPS_HFLAG_AWRAP
| MIPS_HFLAG_DSP
| MIPS_HFLAG_DSP_R2
|
284 MIPS_HFLAG_DSP_R3
| MIPS_HFLAG_SBRI
| MIPS_HFLAG_MSA
|
285 MIPS_HFLAG_FRE
| MIPS_HFLAG_ELPA
| MIPS_HFLAG_ERL
);
286 if (env
->CP0_Status
& (1 << CP0St_ERL
)) {
287 env
->hflags
|= MIPS_HFLAG_ERL
;
289 if (!(env
->CP0_Status
& (1 << CP0St_EXL
)) &&
290 !(env
->CP0_Status
& (1 << CP0St_ERL
)) &&
291 !(env
->hflags
& MIPS_HFLAG_DM
)) {
292 env
->hflags
|= (env
->CP0_Status
>> CP0St_KSU
) &
295 #if defined(TARGET_MIPS64)
296 if ((env
->insn_flags
& ISA_MIPS3
) &&
297 (((env
->hflags
& MIPS_HFLAG_KSU
) != MIPS_HFLAG_UM
) ||
298 (env
->CP0_Status
& (1 << CP0St_PX
)) ||
299 (env
->CP0_Status
& (1 << CP0St_UX
)))) {
300 env
->hflags
|= MIPS_HFLAG_64
;
303 if (!(env
->insn_flags
& ISA_MIPS3
)) {
304 env
->hflags
|= MIPS_HFLAG_AWRAP
;
305 } else if (((env
->hflags
& MIPS_HFLAG_KSU
) == MIPS_HFLAG_UM
) &&
306 !(env
->CP0_Status
& (1 << CP0St_UX
))) {
307 env
->hflags
|= MIPS_HFLAG_AWRAP
;
308 } else if (env
->insn_flags
& ISA_MIPS_R6
) {
309 /* Address wrapping for Supervisor and Kernel is specified in R6 */
310 if ((((env
->hflags
& MIPS_HFLAG_KSU
) == MIPS_HFLAG_SM
) &&
311 !(env
->CP0_Status
& (1 << CP0St_SX
))) ||
312 (((env
->hflags
& MIPS_HFLAG_KSU
) == MIPS_HFLAG_KM
) &&
313 !(env
->CP0_Status
& (1 << CP0St_KX
)))) {
314 env
->hflags
|= MIPS_HFLAG_AWRAP
;
318 if (((env
->CP0_Status
& (1 << CP0St_CU0
)) &&
319 !(env
->insn_flags
& ISA_MIPS_R6
)) ||
320 !(env
->hflags
& MIPS_HFLAG_KSU
)) {
321 env
->hflags
|= MIPS_HFLAG_CP0
;
323 if (env
->CP0_Status
& (1 << CP0St_CU1
)) {
324 env
->hflags
|= MIPS_HFLAG_FPU
;
326 if (env
->CP0_Status
& (1 << CP0St_FR
)) {
327 env
->hflags
|= MIPS_HFLAG_F64
;
329 if (((env
->hflags
& MIPS_HFLAG_KSU
) != MIPS_HFLAG_KM
) &&
330 (env
->CP0_Config5
& (1 << CP0C5_SBRI
))) {
331 env
->hflags
|= MIPS_HFLAG_SBRI
;
333 if (env
->insn_flags
& ASE_DSP_R3
) {
335 * Our cpu supports DSP R3 ASE, so enable
336 * access to DSP R3 resources.
338 if (env
->CP0_Status
& (1 << CP0St_MX
)) {
339 env
->hflags
|= MIPS_HFLAG_DSP
| MIPS_HFLAG_DSP_R2
|
342 } else if (env
->insn_flags
& ASE_DSP_R2
) {
344 * Our cpu supports DSP R2 ASE, so enable
345 * access to DSP R2 resources.
347 if (env
->CP0_Status
& (1 << CP0St_MX
)) {
348 env
->hflags
|= MIPS_HFLAG_DSP
| MIPS_HFLAG_DSP_R2
;
351 } else if (env
->insn_flags
& ASE_DSP
) {
353 * Our cpu supports DSP ASE, so enable
354 * access to DSP resources.
356 if (env
->CP0_Status
& (1 << CP0St_MX
)) {
357 env
->hflags
|= MIPS_HFLAG_DSP
;
361 if (env
->insn_flags
& ISA_MIPS_R2
) {
362 if (env
->active_fpu
.fcr0
& (1 << FCR0_F64
)) {
363 env
->hflags
|= MIPS_HFLAG_COP1X
;
365 } else if (env
->insn_flags
& ISA_MIPS_R1
) {
366 if (env
->hflags
& MIPS_HFLAG_64
) {
367 env
->hflags
|= MIPS_HFLAG_COP1X
;
369 } else if (env
->insn_flags
& ISA_MIPS4
) {
371 * All supported MIPS IV CPUs use the XX (CU3) to enable
372 * and disable the MIPS IV extensions to the MIPS III ISA.
373 * Some other MIPS IV CPUs ignore the bit, so the check here
374 * would be too restrictive for them.
376 if (env
->CP0_Status
& (1U << CP0St_CU3
)) {
377 env
->hflags
|= MIPS_HFLAG_COP1X
;
380 if (env
->insn_flags
& ASE_MSA
) {
381 if (env
->CP0_Config5
& (1 << CP0C5_MSAEn
)) {
382 env
->hflags
|= MIPS_HFLAG_MSA
;
385 if (env
->active_fpu
.fcr0
& (1 << FCR0_FREP
)) {
386 if (env
->CP0_Config5
& (1 << CP0C5_FRE
)) {
387 env
->hflags
|= MIPS_HFLAG_FRE
;
390 if (env
->CP0_Config3
& (1 << CP0C3_LPA
)) {
391 if (env
->CP0_PageGrain
& (1 << CP0PG_ELPA
)) {
392 env
->hflags
|= MIPS_HFLAG_ELPA
;
397 void cpu_mips_tlb_flush(CPUMIPSState
*env
);
398 void sync_c0_status(CPUMIPSState
*env
, CPUMIPSState
*cpu
, int tc
);
399 void cpu_mips_store_status(CPUMIPSState
*env
, target_ulong val
);
400 void cpu_mips_store_cause(CPUMIPSState
*env
, target_ulong val
);
402 const char *mips_exception_name(int32_t exception
);
404 void QEMU_NORETURN
do_raise_exception_err(CPUMIPSState
*env
, uint32_t exception
,
405 int error_code
, uintptr_t pc
);
407 static inline void QEMU_NORETURN
do_raise_exception(CPUMIPSState
*env
,
411 do_raise_exception_err(env
, exception
, 0, pc
);