xref: /openbmc/qemu/target/mips/sysemu/machine.c (revision 61f406f3)
1 #include "qemu/osdep.h"
2 #include "cpu.h"
3 #include "internal.h"
4 #include "migration/cpu.h"
5 #include "fpu_helper.h"
6 
7 static int cpu_post_load(void *opaque, int version_id)
8 {
9     MIPSCPU *cpu = opaque;
10     CPUMIPSState *env = &cpu->env;
11 
12     restore_fp_status(env);
13     restore_msa_fp_status(env);
14     compute_hflags(env);
15     restore_pamask(env);
16 
17     return 0;
18 }
19 
20 /* FPU state */
21 
22 static int get_fpr(QEMUFile *f, void *pv, size_t size,
23                    const VMStateField *field)
24 {
25     int i;
26     fpr_t *v = pv;
27     /* Restore entire MSA vector register */
28     for (i = 0; i < MSA_WRLEN / 64; i++) {
29         qemu_get_sbe64s(f, &v->wr.d[i]);
30     }
31     return 0;
32 }
33 
34 static int put_fpr(QEMUFile *f, void *pv, size_t size,
35                    const VMStateField *field, JSONWriter *vmdesc)
36 {
37     int i;
38     fpr_t *v = pv;
39     /* Save entire MSA vector register */
40     for (i = 0; i < MSA_WRLEN / 64; i++) {
41         qemu_put_sbe64s(f, &v->wr.d[i]);
42     }
43 
44     return 0;
45 }
46 
47 static const VMStateInfo vmstate_info_fpr = {
48     .name = "fpr",
49     .get  = get_fpr,
50     .put  = put_fpr,
51 };
52 
53 #define VMSTATE_FPR_ARRAY_V(_f, _s, _n, _v)                     \
54     VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_fpr, fpr_t)
55 
56 #define VMSTATE_FPR_ARRAY(_f, _s, _n)                           \
57     VMSTATE_FPR_ARRAY_V(_f, _s, _n, 0)
58 
59 static const VMStateField vmstate_fpu_fields[] = {
60     VMSTATE_FPR_ARRAY(fpr, CPUMIPSFPUContext, 32),
61     VMSTATE_UINT32(fcr0, CPUMIPSFPUContext),
62     VMSTATE_UINT32(fcr31, CPUMIPSFPUContext),
63     VMSTATE_END_OF_LIST()
64 };
65 
66 static const VMStateDescription vmstate_fpu = {
67     .name = "cpu/fpu",
68     .version_id = 1,
69     .minimum_version_id = 1,
70     .fields = vmstate_fpu_fields
71 };
72 
73 static const VMStateDescription vmstate_inactive_fpu = {
74     .name = "cpu/inactive_fpu",
75     .version_id = 1,
76     .minimum_version_id = 1,
77     .fields = vmstate_fpu_fields
78 };
79 
80 /* TC state */
81 
82 static const VMStateField vmstate_tc_fields[] = {
83     VMSTATE_UINTTL_ARRAY(gpr, TCState, 32),
84 #if defined(TARGET_MIPS64)
85     VMSTATE_UINT64_ARRAY(gpr_hi, TCState, 32),
86 #endif /* TARGET_MIPS64 */
87     VMSTATE_UINTTL(PC, TCState),
88     VMSTATE_UINTTL_ARRAY(HI, TCState, MIPS_DSP_ACC),
89     VMSTATE_UINTTL_ARRAY(LO, TCState, MIPS_DSP_ACC),
90     VMSTATE_UINTTL_ARRAY(ACX, TCState, MIPS_DSP_ACC),
91     VMSTATE_UINTTL(DSPControl, TCState),
92     VMSTATE_INT32(CP0_TCStatus, TCState),
93     VMSTATE_INT32(CP0_TCBind, TCState),
94     VMSTATE_UINTTL(CP0_TCHalt, TCState),
95     VMSTATE_UINTTL(CP0_TCContext, TCState),
96     VMSTATE_UINTTL(CP0_TCSchedule, TCState),
97     VMSTATE_UINTTL(CP0_TCScheFBack, TCState),
98     VMSTATE_INT32(CP0_Debug_tcstatus, TCState),
99     VMSTATE_UINTTL(CP0_UserLocal, TCState),
100     VMSTATE_INT32(msacsr, TCState),
101     VMSTATE_UINTTL_ARRAY(mxu_gpr, TCState, NUMBER_OF_MXU_REGISTERS - 1),
102     VMSTATE_UINTTL(mxu_cr, TCState),
103     VMSTATE_END_OF_LIST()
104 };
105 
106 static const VMStateDescription vmstate_tc = {
107     .name = "cpu/tc",
108     .version_id = 2,
109     .minimum_version_id = 2,
110     .fields = vmstate_tc_fields
111 };
112 
113 static const VMStateDescription vmstate_inactive_tc = {
114     .name = "cpu/inactive_tc",
115     .version_id = 2,
116     .minimum_version_id = 2,
117     .fields = vmstate_tc_fields
118 };
119 
120 /* MVP state */
121 
122 static const VMStateDescription vmstate_mvp = {
123     .name = "cpu/mvp",
124     .version_id = 1,
125     .minimum_version_id = 1,
126     .fields = (const VMStateField[]) {
127         VMSTATE_INT32(CP0_MVPControl, CPUMIPSMVPContext),
128         VMSTATE_INT32(CP0_MVPConf0, CPUMIPSMVPContext),
129         VMSTATE_INT32(CP0_MVPConf1, CPUMIPSMVPContext),
130         VMSTATE_END_OF_LIST()
131     }
132 };
133 
134 /* TLB state */
135 
136 static int get_tlb(QEMUFile *f, void *pv, size_t size,
137                    const VMStateField *field)
138 {
139     r4k_tlb_t *v = pv;
140     uint16_t flags;
141 
142     qemu_get_betls(f, &v->VPN);
143     qemu_get_be32s(f, &v->PageMask);
144     qemu_get_be16s(f, &v->ASID);
145     qemu_get_be16s(f, &flags);
146     v->G = (flags >> 10) & 1;
147     v->C0 = (flags >> 7) & 3;
148     v->C1 = (flags >> 4) & 3;
149     v->V0 = (flags >> 3) & 1;
150     v->V1 = (flags >> 2) & 1;
151     v->D0 = (flags >> 1) & 1;
152     v->D1 = (flags >> 0) & 1;
153     v->EHINV = (flags >> 15) & 1;
154     v->RI1 = (flags >> 14) & 1;
155     v->RI0 = (flags >> 13) & 1;
156     v->XI1 = (flags >> 12) & 1;
157     v->XI0 = (flags >> 11) & 1;
158     qemu_get_be64s(f, &v->PFN[0]);
159     qemu_get_be64s(f, &v->PFN[1]);
160 
161     return 0;
162 }
163 
164 static int put_tlb(QEMUFile *f, void *pv, size_t size,
165                    const VMStateField *field, JSONWriter *vmdesc)
166 {
167     r4k_tlb_t *v = pv;
168 
169     uint16_t asid = v->ASID;
170     uint16_t flags = ((v->EHINV << 15) |
171                       (v->RI1 << 14) |
172                       (v->RI0 << 13) |
173                       (v->XI1 << 12) |
174                       (v->XI0 << 11) |
175                       (v->G << 10) |
176                       (v->C0 << 7) |
177                       (v->C1 << 4) |
178                       (v->V0 << 3) |
179                       (v->V1 << 2) |
180                       (v->D0 << 1) |
181                       (v->D1 << 0));
182 
183     qemu_put_betls(f, &v->VPN);
184     qemu_put_be32s(f, &v->PageMask);
185     qemu_put_be16s(f, &asid);
186     qemu_put_be16s(f, &flags);
187     qemu_put_be64s(f, &v->PFN[0]);
188     qemu_put_be64s(f, &v->PFN[1]);
189 
190     return 0;
191 }
192 
193 static const VMStateInfo vmstate_info_tlb = {
194     .name = "tlb_entry",
195     .get  = get_tlb,
196     .put  = put_tlb,
197 };
198 
199 #define VMSTATE_TLB_ARRAY_V(_f, _s, _n, _v)                     \
200     VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_tlb, r4k_tlb_t)
201 
202 #define VMSTATE_TLB_ARRAY(_f, _s, _n)                           \
203     VMSTATE_TLB_ARRAY_V(_f, _s, _n, 0)
204 
205 static const VMStateDescription vmstate_tlb = {
206     .name = "cpu/tlb",
207     .version_id = 2,
208     .minimum_version_id = 2,
209     .fields = (const VMStateField[]) {
210         VMSTATE_UINT32(nb_tlb, CPUMIPSTLBContext),
211         VMSTATE_UINT32(tlb_in_use, CPUMIPSTLBContext),
212         VMSTATE_TLB_ARRAY(mmu.r4k.tlb, CPUMIPSTLBContext, MIPS_TLB_MAX),
213         VMSTATE_END_OF_LIST()
214     }
215 };
216 
217 /* MIPS CPU state */
218 
219 const VMStateDescription vmstate_mips_cpu = {
220     .name = "cpu",
221     .version_id = 21,
222     .minimum_version_id = 21,
223     .post_load = cpu_post_load,
224     .fields = (const VMStateField[]) {
225         /* Active TC */
226         VMSTATE_STRUCT(env.active_tc, MIPSCPU, 1, vmstate_tc, TCState),
227 
228         /* Active FPU */
229         VMSTATE_STRUCT(env.active_fpu, MIPSCPU, 1, vmstate_fpu,
230                        CPUMIPSFPUContext),
231 
232         /* MVP */
233         VMSTATE_STRUCT_POINTER(env.mvp, MIPSCPU, vmstate_mvp,
234                                CPUMIPSMVPContext),
235 
236         /* TLB */
237         VMSTATE_STRUCT_POINTER(env.tlb, MIPSCPU, vmstate_tlb,
238                                CPUMIPSTLBContext),
239 
240         /* CPU metastate */
241         VMSTATE_UINT32(env.current_tc, MIPSCPU),
242         VMSTATE_UINT32(env.current_fpu, MIPSCPU),
243         VMSTATE_INT32(env.error_code, MIPSCPU),
244         VMSTATE_UINTTL(env.btarget, MIPSCPU),
245         VMSTATE_UINTTL(env.bcond, MIPSCPU),
246 
247         /* Remaining CP0 registers */
248         VMSTATE_INT32(env.CP0_Index, MIPSCPU),
249         VMSTATE_INT32(env.CP0_VPControl, MIPSCPU),
250         VMSTATE_INT32(env.CP0_Random, MIPSCPU),
251         VMSTATE_INT32(env.CP0_VPEControl, MIPSCPU),
252         VMSTATE_INT32(env.CP0_VPEConf0, MIPSCPU),
253         VMSTATE_INT32(env.CP0_VPEConf1, MIPSCPU),
254         VMSTATE_UINTTL(env.CP0_YQMask, MIPSCPU),
255         VMSTATE_UINTTL(env.CP0_VPESchedule, MIPSCPU),
256         VMSTATE_UINTTL(env.CP0_VPEScheFBack, MIPSCPU),
257         VMSTATE_INT32(env.CP0_VPEOpt, MIPSCPU),
258         VMSTATE_UINT64(env.CP0_EntryLo0, MIPSCPU),
259         VMSTATE_UINT64(env.CP0_EntryLo1, MIPSCPU),
260         VMSTATE_INT32(env.CP0_GlobalNumber, MIPSCPU),
261         VMSTATE_UINTTL(env.CP0_Context, MIPSCPU),
262         VMSTATE_INT32(env.CP0_MemoryMapID, MIPSCPU),
263         VMSTATE_INT32(env.CP0_PageMask, MIPSCPU),
264         VMSTATE_INT32(env.CP0_PageGrain, MIPSCPU),
265         VMSTATE_UINTTL(env.CP0_SegCtl0, MIPSCPU),
266         VMSTATE_UINTTL(env.CP0_SegCtl1, MIPSCPU),
267         VMSTATE_UINTTL(env.CP0_SegCtl2, MIPSCPU),
268         VMSTATE_UINTTL(env.CP0_PWBase, MIPSCPU),
269         VMSTATE_UINTTL(env.CP0_PWField, MIPSCPU),
270         VMSTATE_UINTTL(env.CP0_PWSize, MIPSCPU),
271         VMSTATE_INT32(env.CP0_Wired, MIPSCPU),
272         VMSTATE_INT32(env.CP0_PWCtl, MIPSCPU),
273         VMSTATE_INT32(env.CP0_SRSConf0, MIPSCPU),
274         VMSTATE_INT32(env.CP0_SRSConf1, MIPSCPU),
275         VMSTATE_INT32(env.CP0_SRSConf2, MIPSCPU),
276         VMSTATE_INT32(env.CP0_SRSConf3, MIPSCPU),
277         VMSTATE_INT32(env.CP0_SRSConf4, MIPSCPU),
278         VMSTATE_INT32(env.CP0_HWREna, MIPSCPU),
279         VMSTATE_UINTTL(env.CP0_BadVAddr, MIPSCPU),
280         VMSTATE_UINT32(env.CP0_BadInstr, MIPSCPU),
281         VMSTATE_UINT32(env.CP0_BadInstrP, MIPSCPU),
282         VMSTATE_UINT32(env.CP0_BadInstrX, MIPSCPU),
283         VMSTATE_INT32(env.CP0_Count, MIPSCPU),
284         VMSTATE_UNUSED(sizeof(uint32_t)), /* was CP0_SAARI */
285         VMSTATE_UNUSED(2 * sizeof(uint64_t)), /* was CP0_SAAR[2] */
286         VMSTATE_UINTTL(env.CP0_EntryHi, MIPSCPU),
287         VMSTATE_INT32(env.CP0_Compare, MIPSCPU),
288         VMSTATE_INT32(env.CP0_Status, MIPSCPU),
289         VMSTATE_INT32(env.CP0_IntCtl, MIPSCPU),
290         VMSTATE_INT32(env.CP0_SRSCtl, MIPSCPU),
291         VMSTATE_INT32(env.CP0_SRSMap, MIPSCPU),
292         VMSTATE_INT32(env.CP0_Cause, MIPSCPU),
293         VMSTATE_UINTTL(env.CP0_EPC, MIPSCPU),
294         VMSTATE_INT32(env.CP0_PRid, MIPSCPU),
295         VMSTATE_UINTTL(env.CP0_EBase, MIPSCPU),
296         VMSTATE_UINTTL(env.CP0_CMGCRBase, MIPSCPU),
297         VMSTATE_INT32(env.CP0_Config0, MIPSCPU),
298         VMSTATE_INT32(env.CP0_Config1, MIPSCPU),
299         VMSTATE_INT32(env.CP0_Config2, MIPSCPU),
300         VMSTATE_INT32(env.CP0_Config3, MIPSCPU),
301         VMSTATE_INT32(env.CP0_Config4, MIPSCPU),
302         VMSTATE_INT32(env.CP0_Config5, MIPSCPU),
303         VMSTATE_INT32(env.CP0_Config6, MIPSCPU),
304         VMSTATE_INT32(env.CP0_Config7, MIPSCPU),
305         VMSTATE_UINT64(env.CP0_LLAddr, MIPSCPU),
306         VMSTATE_UINT64_ARRAY(env.CP0_MAAR, MIPSCPU, MIPS_MAAR_MAX),
307         VMSTATE_INT32(env.CP0_MAARI, MIPSCPU),
308         VMSTATE_UINTTL(env.lladdr, MIPSCPU),
309         VMSTATE_UINTTL_ARRAY(env.CP0_WatchLo, MIPSCPU, 8),
310         VMSTATE_UINT64_ARRAY(env.CP0_WatchHi, MIPSCPU, 8),
311         VMSTATE_UINTTL(env.CP0_XContext, MIPSCPU),
312         VMSTATE_INT32(env.CP0_Framemask, MIPSCPU),
313         VMSTATE_INT32(env.CP0_Debug, MIPSCPU),
314         VMSTATE_UINTTL(env.CP0_DEPC, MIPSCPU),
315         VMSTATE_INT32(env.CP0_Performance0, MIPSCPU),
316         VMSTATE_INT32(env.CP0_ErrCtl, MIPSCPU),
317         VMSTATE_UINT64(env.CP0_TagLo, MIPSCPU),
318         VMSTATE_INT32(env.CP0_DataLo, MIPSCPU),
319         VMSTATE_INT32(env.CP0_TagHi, MIPSCPU),
320         VMSTATE_INT32(env.CP0_DataHi, MIPSCPU),
321         VMSTATE_UINTTL(env.CP0_ErrorEPC, MIPSCPU),
322         VMSTATE_INT32(env.CP0_DESAVE, MIPSCPU),
323         VMSTATE_UINTTL_ARRAY(env.CP0_KScratch, MIPSCPU, MIPS_KSCRATCH_NUM),
324 
325         /* Inactive TC */
326         VMSTATE_STRUCT_ARRAY(env.tcs, MIPSCPU, MIPS_SHADOW_SET_MAX, 1,
327                              vmstate_inactive_tc, TCState),
328         VMSTATE_STRUCT_ARRAY(env.fpus, MIPSCPU, MIPS_FPU_MAX, 1,
329                              vmstate_inactive_fpu, CPUMIPSFPUContext),
330 
331         VMSTATE_END_OF_LIST()
332     },
333 };
334