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ppc/pnv: Loop on the whole hierarchy to populate the DT with the XSCOM nodes
[qemu.git] / hw / ppc / pnv_core.c
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1/*
2 * QEMU PowerPC PowerNV CPU Core model
3 *
4 * Copyright (c) 2016, IBM Corporation.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public License
8 * as published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
0b8fa32f 19
d2fd9612 20#include "qemu/osdep.h"
71e8a915 21#include "sysemu/reset.h"
d2fd9612 22#include "qapi/error.h"
24ece072 23#include "qemu/log.h"
0b8fa32f 24#include "qemu/module.h"
fcf5ef2a 25#include "target/ppc/cpu.h"
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26#include "hw/ppc/ppc.h"
27#include "hw/ppc/pnv.h"
28#include "hw/ppc/pnv_core.h"
ec575aa0 29#include "hw/ppc/pnv_xscom.h"
960fbd29 30#include "hw/ppc/xics.h"
a27bd6c7 31#include "hw/qdev-properties.h"
d2fd9612 32
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33static const char *pnv_core_cpu_typename(PnvCore *pc)
34{
35 const char *core_type = object_class_get_name(object_get_class(OBJECT(pc)));
36 int len = strlen(core_type) - strlen(PNV_CORE_TYPE_SUFFIX);
37 char *s = g_strdup_printf(POWERPC_CPU_TYPE_NAME("%.*s"), len, core_type);
38 const char *cpu_type = object_class_get_name(object_class_by_name(s));
39 g_free(s);
40 return cpu_type;
41}
42
d49e8a9b 43static void pnv_core_cpu_reset(PowerPCCPU *cpu, PnvChip *chip)
d2fd9612 44{
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45 CPUState *cs = CPU(cpu);
46 CPUPPCState *env = &cpu->env;
d49e8a9b 47 PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
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48
49 cpu_reset(cs);
50
51 /*
52 * the skiboot firmware elects a primary thread to initialize the
53 * system and it can be any.
54 */
55 env->gpr[3] = PNV_FDT_ADDR;
56 env->nip = 0x10;
57 env->msr |= MSR_HVB; /* Hypervisor mode */
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58
59 pcc->intc_reset(chip, cpu);
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60}
61
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62/*
63 * These values are read by the PowerNV HW monitors under Linux
64 */
65#define PNV_XSCOM_EX_DTS_RESULT0 0x50000
66#define PNV_XSCOM_EX_DTS_RESULT1 0x50001
67
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68static uint64_t pnv_core_power8_xscom_read(void *opaque, hwaddr addr,
69 unsigned int width)
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70{
71 uint32_t offset = addr >> 3;
72 uint64_t val = 0;
73
74 /* The result should be 38 C */
75 switch (offset) {
76 case PNV_XSCOM_EX_DTS_RESULT0:
77 val = 0x26f024f023f0000ull;
78 break;
79 case PNV_XSCOM_EX_DTS_RESULT1:
80 val = 0x24f000000000000ull;
81 break;
82 default:
c7e71a18 83 qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
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84 addr);
85 }
86
87 return val;
88}
89
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90static void pnv_core_power8_xscom_write(void *opaque, hwaddr addr, uint64_t val,
91 unsigned int width)
24ece072 92{
c7e71a18 93 qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
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94 addr);
95}
96
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97static const MemoryRegionOps pnv_core_power8_xscom_ops = {
98 .read = pnv_core_power8_xscom_read,
99 .write = pnv_core_power8_xscom_write,
100 .valid.min_access_size = 8,
101 .valid.max_access_size = 8,
102 .impl.min_access_size = 8,
103 .impl.max_access_size = 8,
104 .endianness = DEVICE_BIG_ENDIAN,
105};
106
107
108/*
109 * POWER9 core controls
110 */
111#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
112#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
113
114static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
115 unsigned int width)
116{
117 uint32_t offset = addr >> 3;
118 uint64_t val = 0;
119
120 /* The result should be 38 C */
121 switch (offset) {
122 case PNV_XSCOM_EX_DTS_RESULT0:
123 val = 0x26f024f023f0000ull;
124 break;
125 case PNV_XSCOM_EX_DTS_RESULT1:
126 val = 0x24f000000000000ull;
127 break;
128 case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
129 case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
130 val = 0x0;
131 break;
132 default:
133 qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
134 addr);
135 }
136
137 return val;
138}
139
140static void pnv_core_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
141 unsigned int width)
142{
143 uint32_t offset = addr >> 3;
144
145 switch (offset) {
146 case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
147 case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
148 break;
149 default:
150 qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
151 addr);
152 }
153}
154
155static const MemoryRegionOps pnv_core_power9_xscom_ops = {
156 .read = pnv_core_power9_xscom_read,
157 .write = pnv_core_power9_xscom_write,
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158 .valid.min_access_size = 8,
159 .valid.max_access_size = 8,
160 .impl.min_access_size = 8,
161 .impl.max_access_size = 8,
162 .endianness = DEVICE_BIG_ENDIAN,
163};
164
00d6f4db 165static void pnv_core_cpu_realize(PowerPCCPU *cpu, PnvChip *chip, Error **errp)
d2fd9612 166{
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167 CPUPPCState *env = &cpu->env;
168 int core_pir;
169 int thread_index = 0; /* TODO: TCG supports only one thread */
170 ppc_spr_t *pir = &env->spr_cb[SPR_PIR];
d2fd9612 171 Error *local_err = NULL;
d35aefa9 172 PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
960fbd29 173
3a247521 174 object_property_set_bool(OBJECT(cpu), true, "realized", &local_err);
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175 if (local_err) {
176 error_propagate(errp, local_err);
177 return;
178 }
d2fd9612 179
8fa1f4ef 180 pcc->intc_create(chip, cpu, &local_err);
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181 if (local_err) {
182 error_propagate(errp, local_err);
183 return;
184 }
185
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186 core_pir = object_property_get_uint(OBJECT(cpu), "core-pir", &error_abort);
187
188 /*
189 * The PIR of a thread is the core PIR + the thread index. We will
190 * need to find a way to get the thread index when TCG supports
191 * more than 1. We could use the object name ?
192 */
193 pir->default_value = core_pir + thread_index;
194
195 /* Set time-base frequency to 512 MHz */
196 cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
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197}
198
199static void pnv_core_reset(void *dev)
200{
201 CPUCore *cc = CPU_CORE(dev);
202 PnvCore *pc = PNV_CORE(dev);
203 int i;
3a247521 204
fa06541b 205 for (i = 0; i < cc->nr_threads; i++) {
d49e8a9b 206 pnv_core_cpu_reset(pc->threads[i], pc->chip);
fa06541b 207 }
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208}
209
210static void pnv_core_realize(DeviceState *dev, Error **errp)
211{
212 PnvCore *pc = PNV_CORE(OBJECT(dev));
90ef386c 213 PnvCoreClass *pcc = PNV_CORE_GET_CLASS(pc);
d2fd9612 214 CPUCore *cc = CPU_CORE(OBJECT(dev));
35bdb9de 215 const char *typename = pnv_core_cpu_typename(pc);
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216 Error *local_err = NULL;
217 void *obj;
218 int i, j;
219 char name[32];
960fbd29 220
158e17a6 221 assert(pc->chip);
d2fd9612 222
08304a86 223 pc->threads = g_new(PowerPCCPU *, cc->nr_threads);
d2fd9612 224 for (i = 0; i < cc->nr_threads; i++) {
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225 PowerPCCPU *cpu;
226
08304a86 227 obj = object_new(typename);
8907fc25 228 cpu = POWERPC_CPU(obj);
d2fd9612 229
08304a86 230 pc->threads[i] = POWERPC_CPU(obj);
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231
232 snprintf(name, sizeof(name), "thread[%d]", i);
937c2146 233 object_property_add_child(OBJECT(pc), name, obj, &error_abort);
d2fd9612 234 object_property_add_alias(obj, "core-pir", OBJECT(pc),
937c2146 235 "pir", &error_abort);
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236
237 cpu->machine_data = g_new0(PnvCPUState, 1);
238
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239 object_unref(obj);
240 }
241
242 for (j = 0; j < cc->nr_threads; j++) {
00d6f4db 243 pnv_core_cpu_realize(pc->threads[j], pc->chip, &local_err);
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244 if (local_err) {
245 goto err;
246 }
247 }
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248
249 snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
2b548a42 250 /* TODO: check PNV_XSCOM_EX_SIZE for p10 */
90ef386c 251 pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
c035851a 252 pc, name, PNV_XSCOM_EX_SIZE);
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253
254 qemu_register_reset(pnv_core_reset, pc);
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255 return;
256
257err:
258 while (--i >= 0) {
08304a86 259 obj = OBJECT(pc->threads[i]);
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260 object_unparent(obj);
261 }
262 g_free(pc->threads);
263 error_propagate(errp, local_err);
264}
265
0990ce6a 266static void pnv_core_cpu_unrealize(PowerPCCPU *cpu, PnvChip *chip)
5e22e292 267{
8907fc25 268 PnvCPUState *pnv_cpu = pnv_cpu_state(cpu);
0990ce6a 269 PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
8907fc25 270
0990ce6a 271 pcc->intc_destroy(chip, cpu);
5e22e292 272 cpu_remove_sync(CPU(cpu));
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273 cpu->machine_data = NULL;
274 g_free(pnv_cpu);
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275 object_unparent(OBJECT(cpu));
276}
277
278static void pnv_core_unrealize(DeviceState *dev, Error **errp)
279{
280 PnvCore *pc = PNV_CORE(dev);
281 CPUCore *cc = CPU_CORE(dev);
282 int i;
283
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284 qemu_unregister_reset(pnv_core_reset, pc);
285
5e22e292 286 for (i = 0; i < cc->nr_threads; i++) {
0990ce6a 287 pnv_core_cpu_unrealize(pc->threads[i], pc->chip);
5e22e292
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288 }
289 g_free(pc->threads);
290}
291
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292static Property pnv_core_properties[] = {
293 DEFINE_PROP_UINT32("pir", PnvCore, pir, 0),
158e17a6 294 DEFINE_PROP_LINK("chip", PnvCore, chip, TYPE_PNV_CHIP, PnvChip *),
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295 DEFINE_PROP_END_OF_LIST(),
296};
297
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298static void pnv_core_power8_class_init(ObjectClass *oc, void *data)
299{
300 PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
301
302 pcc->xscom_ops = &pnv_core_power8_xscom_ops;
303}
304
305static void pnv_core_power9_class_init(ObjectClass *oc, void *data)
306{
307 PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
308
309 pcc->xscom_ops = &pnv_core_power9_xscom_ops;
310}
311
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312static void pnv_core_power10_class_init(ObjectClass *oc, void *data)
313{
314 PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
315
316 /* TODO: Use the P9 XSCOMs for now on P10 */
317 pcc->xscom_ops = &pnv_core_power9_xscom_ops;
318}
319
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320static void pnv_core_class_init(ObjectClass *oc, void *data)
321{
322 DeviceClass *dc = DEVICE_CLASS(oc);
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323
324 dc->realize = pnv_core_realize;
5e22e292 325 dc->unrealize = pnv_core_unrealize;
d2fd9612 326 dc->props = pnv_core_properties;
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327}
328
90ef386c 329#define DEFINE_PNV_CORE_TYPE(family, cpu_model) \
7383af1e
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330 { \
331 .parent = TYPE_PNV_CORE, \
332 .name = PNV_CORE_TYPE_NAME(cpu_model), \
90ef386c 333 .class_init = pnv_core_##family##_class_init, \
d2fd9612 334 }
d2fd9612 335
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336static const TypeInfo pnv_core_infos[] = {
337 {
338 .name = TYPE_PNV_CORE,
339 .parent = TYPE_CPU_CORE,
340 .instance_size = sizeof(PnvCore),
341 .class_size = sizeof(PnvCoreClass),
342 .class_init = pnv_core_class_init,
343 .abstract = true,
344 },
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345 DEFINE_PNV_CORE_TYPE(power8, "power8e_v2.1"),
346 DEFINE_PNV_CORE_TYPE(power8, "power8_v2.0"),
347 DEFINE_PNV_CORE_TYPE(power8, "power8nvl_v1.0"),
348 DEFINE_PNV_CORE_TYPE(power9, "power9_v2.0"),
2b548a42 349 DEFINE_PNV_CORE_TYPE(power10, "power10_v1.0"),
7383af1e 350};
d2fd9612 351
7383af1e 352DEFINE_TYPES(pnv_core_infos)
5dad902c
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353
354/*
355 * POWER9 Quads
356 */
357
358#define P9X_EX_NCU_SPEC_BAR 0x11010
359
360static uint64_t pnv_quad_xscom_read(void *opaque, hwaddr addr,
361 unsigned int width)
362{
363 uint32_t offset = addr >> 3;
364 uint64_t val = -1;
365
366 switch (offset) {
367 case P9X_EX_NCU_SPEC_BAR:
368 case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
369 val = 0;
370 break;
371 default:
372 qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
373 offset);
374 }
375
376 return val;
377}
378
379static void pnv_quad_xscom_write(void *opaque, hwaddr addr, uint64_t val,
380 unsigned int width)
381{
382 uint32_t offset = addr >> 3;
383
384 switch (offset) {
385 case P9X_EX_NCU_SPEC_BAR:
386 case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
387 break;
388 default:
389 qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
390 offset);
391 }
392}
393
394static const MemoryRegionOps pnv_quad_xscom_ops = {
395 .read = pnv_quad_xscom_read,
396 .write = pnv_quad_xscom_write,
397 .valid.min_access_size = 8,
398 .valid.max_access_size = 8,
399 .impl.min_access_size = 8,
400 .impl.max_access_size = 8,
401 .endianness = DEVICE_BIG_ENDIAN,
402};
403
404static void pnv_quad_realize(DeviceState *dev, Error **errp)
405{
406 PnvQuad *eq = PNV_QUAD(dev);
407 char name[32];
408
409 snprintf(name, sizeof(name), "xscom-quad.%d", eq->id);
410 pnv_xscom_region_init(&eq->xscom_regs, OBJECT(dev), &pnv_quad_xscom_ops,
411 eq, name, PNV9_XSCOM_EQ_SIZE);
412}
413
414static Property pnv_quad_properties[] = {
415 DEFINE_PROP_UINT32("id", PnvQuad, id, 0),
416 DEFINE_PROP_END_OF_LIST(),
417};
418
419static void pnv_quad_class_init(ObjectClass *oc, void *data)
420{
421 DeviceClass *dc = DEVICE_CLASS(oc);
422
423 dc->realize = pnv_quad_realize;
424 dc->props = pnv_quad_properties;
425}
426
427static const TypeInfo pnv_quad_info = {
428 .name = TYPE_PNV_QUAD,
429 .parent = TYPE_DEVICE,
430 .instance_size = sizeof(PnvQuad),
431 .class_init = pnv_quad_class_init,
432};
433
434static void pnv_core_register_types(void)
435{
436 type_register_static(&pnv_quad_info);
437}
438
439type_init(pnv_core_register_types)
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