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27#include "qemu/osdep.h"
28#include "cpu.h"
29#include "qemu/log.h"
30#include "qemu/error-report.h"
31#include "sysemu/sysemu.h"
32#include "hw/qdev.h"
33#include "sysemu/device_tree.h"
34#include "sysemu/cpus.h"
35#include "sysemu/hw_accel.h"
36#include "kvm_ppc.h"
37
38#include "hw/ppc/spapr.h"
39#include "hw/ppc/spapr_vio.h"
40#include "hw/ppc/spapr_rtas.h"
41#include "hw/ppc/spapr_cpu_core.h"
42#include "hw/ppc/ppc.h"
43#include "hw/boards.h"
44
45#include <libfdt.h>
46#include "hw/ppc/spapr_drc.h"
47#include "qemu/cutils.h"
48#include "trace.h"
49#include "hw/ppc/fdt.h"
50#include "target/ppc/mmu-hash64.h"
51#include "target/ppc/mmu-book3s-v3.h"
52
53static void rtas_display_character(PowerPCCPU *cpu, SpaprMachineState *spapr,
54 uint32_t token, uint32_t nargs,
55 target_ulong args,
56 uint32_t nret, target_ulong rets)
57{
58 uint8_t c = rtas_ld(args, 0);
59 SpaprVioDevice *sdev = vty_lookup(spapr, 0);
60
61 if (!sdev) {
62 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
63 } else {
64 vty_putchars(sdev, &c, sizeof(c));
65 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
66 }
67}
68
69static void rtas_power_off(PowerPCCPU *cpu, SpaprMachineState *spapr,
70 uint32_t token, uint32_t nargs, target_ulong args,
71 uint32_t nret, target_ulong rets)
72{
73 if (nargs != 2 || nret != 1) {
74 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
75 return;
76 }
77 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
78 cpu_stop_current();
79 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
80}
81
82static void rtas_system_reboot(PowerPCCPU *cpu, SpaprMachineState *spapr,
83 uint32_t token, uint32_t nargs,
84 target_ulong args,
85 uint32_t nret, target_ulong rets)
86{
87 if (nargs != 0 || nret != 1) {
88 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
89 return;
90 }
91 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
92 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
93}
94
95static void rtas_query_cpu_stopped_state(PowerPCCPU *cpu_,
96 SpaprMachineState *spapr,
97 uint32_t token, uint32_t nargs,
98 target_ulong args,
99 uint32_t nret, target_ulong rets)
100{
101 target_ulong id;
102 PowerPCCPU *cpu;
103
104 if (nargs != 1 || nret != 2) {
105 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
106 return;
107 }
108
109 id = rtas_ld(args, 0);
110 cpu = spapr_find_cpu(id);
111 if (cpu != NULL) {
112 if (CPU(cpu)->halted) {
113 rtas_st(rets, 1, 0);
114 } else {
115 rtas_st(rets, 1, 2);
116 }
117
118 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
119 return;
120 }
121
122
123 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
124}
125
126static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
127 uint32_t token, uint32_t nargs,
128 target_ulong args,
129 uint32_t nret, target_ulong rets)
130{
131 target_ulong id, start, r3;
132 PowerPCCPU *newcpu;
133 CPUPPCState *env;
134 PowerPCCPUClass *pcc;
135 target_ulong lpcr;
136
137 if (nargs != 3 || nret != 1) {
138 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
139 return;
140 }
141
142 id = rtas_ld(args, 0);
143 start = rtas_ld(args, 1);
144 r3 = rtas_ld(args, 2);
145
146 newcpu = spapr_find_cpu(id);
147 if (!newcpu) {
148
149 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
150 return;
151 }
152
153 env = &newcpu->env;
154 pcc = POWERPC_CPU_GET_CLASS(newcpu);
155
156 if (!CPU(newcpu)->halted) {
157 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
158 return;
159 }
160
161 cpu_synchronize_state(CPU(newcpu));
162
163 env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
164
165
166 lpcr = env->spr[SPR_LPCR];
167 if (!pcc->interrupts_big_endian(callcpu)) {
168 lpcr |= LPCR_ILE;
169 }
170 if (env->mmu_model == POWERPC_MMU_3_00) {
171
172
173
174
175 if (ppc64_v3_radix(callcpu)) {
176 lpcr |= LPCR_UPRT | LPCR_GTSE | LPCR_HR;
177 } else {
178 lpcr &= ~(LPCR_UPRT | LPCR_GTSE | LPCR_HR);
179 }
180 env->spr[SPR_PSSCR] &= ~PSSCR_EC;
181 }
182 ppc_store_lpcr(newcpu, lpcr);
183
184
185
186
187
188
189 newcpu->env.tb_env->tb_offset = callcpu->env.tb_env->tb_offset;
190
191 spapr_cpu_set_entry_state(newcpu, start, r3);
192
193 qemu_cpu_kick(CPU(newcpu));
194
195 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
196}
197
198static void rtas_stop_self(PowerPCCPU *cpu, SpaprMachineState *spapr,
199 uint32_t token, uint32_t nargs,
200 target_ulong args,
201 uint32_t nret, target_ulong rets)
202{
203 CPUState *cs = CPU(cpu);
204 CPUPPCState *env = &cpu->env;
205 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
206
207
208
209
210
211
212 ppc_store_lpcr(cpu, env->spr[SPR_LPCR] & ~pcc->lpcr_pm);
213 env->spr[SPR_PSSCR] |= PSSCR_EC;
214 cs->halted = 1;
215 kvmppc_set_reg_ppc_online(cpu, 0);
216 qemu_cpu_kick(cs);
217}
218
219static inline int sysparm_st(target_ulong addr, target_ulong len,
220 const void *val, uint16_t vallen)
221{
222 hwaddr phys = ppc64_phys_to_real(addr);
223
224 if (len < 2) {
225 return RTAS_OUT_SYSPARM_PARAM_ERROR;
226 }
227 stw_be_phys(&address_space_memory, phys, vallen);
228 cpu_physical_memory_write(phys + 2, val, MIN(len - 2, vallen));
229 return RTAS_OUT_SUCCESS;
230}
231
232static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu,
233 SpaprMachineState *spapr,
234 uint32_t token, uint32_t nargs,
235 target_ulong args,
236 uint32_t nret, target_ulong rets)
237{
238 MachineState *ms = MACHINE(qdev_get_machine());
239 unsigned int max_cpus = ms->smp.max_cpus;
240 target_ulong parameter = rtas_ld(args, 0);
241 target_ulong buffer = rtas_ld(args, 1);
242 target_ulong length = rtas_ld(args, 2);
243 target_ulong ret;
244
245 switch (parameter) {
246 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: {
247 char *param_val = g_strdup_printf("MaxEntCap=%d,"
248 "DesMem=%" PRIu64 ","
249 "DesProcs=%d,"
250 "MaxPlatProcs=%d",
251 max_cpus,
252 current_machine->ram_size / MiB,
253 ms->smp.cpus,
254 max_cpus);
255 ret = sysparm_st(buffer, length, param_val, strlen(param_val) + 1);
256 g_free(param_val);
257 break;
258 }
259 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: {
260 uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED;
261
262 ret = sysparm_st(buffer, length, ¶m_val, sizeof(param_val));
263 break;
264 }
265 case RTAS_SYSPARM_UUID:
266 ret = sysparm_st(buffer, length, (unsigned char *)&qemu_uuid,
267 (qemu_uuid_set ? 16 : 0));
268 break;
269 default:
270 ret = RTAS_OUT_NOT_SUPPORTED;
271 }
272
273 rtas_st(rets, 0, ret);
274}
275
276static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu,
277 SpaprMachineState *spapr,
278 uint32_t token, uint32_t nargs,
279 target_ulong args,
280 uint32_t nret, target_ulong rets)
281{
282 target_ulong parameter = rtas_ld(args, 0);
283 target_ulong ret = RTAS_OUT_NOT_SUPPORTED;
284
285 switch (parameter) {
286 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS:
287 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE:
288 case RTAS_SYSPARM_UUID:
289 ret = RTAS_OUT_NOT_AUTHORIZED;
290 break;
291 }
292
293 rtas_st(rets, 0, ret);
294}
295
296static void rtas_ibm_os_term(PowerPCCPU *cpu,
297 SpaprMachineState *spapr,
298 uint32_t token, uint32_t nargs,
299 target_ulong args,
300 uint32_t nret, target_ulong rets)
301{
302 qemu_system_guest_panicked(NULL);
303
304 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
305}
306
307static void rtas_set_power_level(PowerPCCPU *cpu, SpaprMachineState *spapr,
308 uint32_t token, uint32_t nargs,
309 target_ulong args, uint32_t nret,
310 target_ulong rets)
311{
312 int32_t power_domain;
313
314 if (nargs != 2 || nret != 2) {
315 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
316 return;
317 }
318
319
320
321
322 power_domain = rtas_ld(args, 0);
323 if (power_domain != -1) {
324 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
325 return;
326 }
327
328 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
329 rtas_st(rets, 1, 100);
330}
331
332static void rtas_get_power_level(PowerPCCPU *cpu, SpaprMachineState *spapr,
333 uint32_t token, uint32_t nargs,
334 target_ulong args, uint32_t nret,
335 target_ulong rets)
336{
337 int32_t power_domain;
338
339 if (nargs != 1 || nret != 2) {
340 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
341 return;
342 }
343
344
345
346
347 power_domain = rtas_ld(args, 0);
348 if (power_domain != -1) {
349 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
350 return;
351 }
352
353 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
354 rtas_st(rets, 1, 100);
355}
356
357static struct rtas_call {
358 const char *name;
359 spapr_rtas_fn fn;
360} rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE];
361
362target_ulong spapr_rtas_call(PowerPCCPU *cpu, SpaprMachineState *spapr,
363 uint32_t token, uint32_t nargs, target_ulong args,
364 uint32_t nret, target_ulong rets)
365{
366 if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) {
367 struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE);
368
369 if (call->fn) {
370 call->fn(cpu, spapr, token, nargs, args, nret, rets);
371 return H_SUCCESS;
372 }
373 }
374
375
376
377
378
379 if (token == 0xa) {
380 rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets);
381 return H_SUCCESS;
382 }
383
384 hcall_dprintf("Unknown RTAS token 0x%x\n", token);
385 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
386 return H_PARAMETER;
387}
388
389uint64_t qtest_rtas_call(char *cmd, uint32_t nargs, uint64_t args,
390 uint32_t nret, uint64_t rets)
391{
392 int token;
393
394 for (token = 0; token < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; token++) {
395 if (strcmp(cmd, rtas_table[token].name) == 0) {
396 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
397 PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
398
399 rtas_table[token].fn(cpu, spapr, token + RTAS_TOKEN_BASE,
400 nargs, args, nret, rets);
401 return H_SUCCESS;
402 }
403 }
404 return H_PARAMETER;
405}
406
407void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn)
408{
409 assert((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX));
410
411 token -= RTAS_TOKEN_BASE;
412
413 assert(!name || !rtas_table[token].name);
414
415 rtas_table[token].name = name;
416 rtas_table[token].fn = fn;
417}
418
419void spapr_dt_rtas_tokens(void *fdt, int rtas)
420{
421 int i;
422
423 for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) {
424 struct rtas_call *call = &rtas_table[i];
425
426 if (!call->name) {
427 continue;
428 }
429
430 _FDT(fdt_setprop_cell(fdt, rtas, call->name, i + RTAS_TOKEN_BASE));
431 }
432}
433
434void spapr_load_rtas(SpaprMachineState *spapr, void *fdt, hwaddr addr)
435{
436 int rtas_node;
437 int ret;
438
439
440 cpu_physical_memory_write(addr, spapr->rtas_blob, spapr->rtas_size);
441
442 ret = fdt_add_mem_rsv(fdt, addr, spapr->rtas_size);
443 if (ret < 0) {
444 error_report("Couldn't add RTAS reserve entry: %s",
445 fdt_strerror(ret));
446 exit(1);
447 }
448
449
450 rtas_node = fdt_path_offset(fdt, "/rtas");
451 assert(rtas_node >= 0);
452
453 ret = fdt_setprop_cell(fdt, rtas_node, "linux,rtas-base", addr);
454 if (ret < 0) {
455 error_report("Couldn't add linux,rtas-base property: %s",
456 fdt_strerror(ret));
457 exit(1);
458 }
459
460 ret = fdt_setprop_cell(fdt, rtas_node, "linux,rtas-entry", addr);
461 if (ret < 0) {
462 error_report("Couldn't add linux,rtas-entry property: %s",
463 fdt_strerror(ret));
464 exit(1);
465 }
466
467 ret = fdt_setprop_cell(fdt, rtas_node, "rtas-size", spapr->rtas_size);
468 if (ret < 0) {
469 error_report("Couldn't add rtas-size property: %s",
470 fdt_strerror(ret));
471 exit(1);
472 }
473}
474
475static void core_rtas_register_types(void)
476{
477 spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character",
478 rtas_display_character);
479 spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off);
480 spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot",
481 rtas_system_reboot);
482 spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state",
483 rtas_query_cpu_stopped_state);
484 spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu);
485 spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self);
486 spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER,
487 "ibm,get-system-parameter",
488 rtas_ibm_get_system_parameter);
489 spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER,
490 "ibm,set-system-parameter",
491 rtas_ibm_set_system_parameter);
492 spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term",
493 rtas_ibm_os_term);
494 spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level",
495 rtas_set_power_level);
496 spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level",
497 rtas_get_power_level);
498}
499
500type_init(core_rtas_register_types)
501
