Merge remote-tracking branch 'remotes/philmd-gitlab/tags/renesas-20201027' into staging
[qemu.git] / hw / pci-host / pnv_phb4_pec.c
1 /*
2 * QEMU PowerPC PowerNV (POWER9) PHB4 model
3 *
4 * Copyright (c) 2018-2020, IBM Corporation.
5 *
6 * This code is licensed under the GPL version 2 or later. See the
7 * COPYING file in the top-level directory.
8 */
9 #include "qemu/osdep.h"
10 #include "qapi/error.h"
11 #include "qemu-common.h"
12 #include "qemu/log.h"
13 #include "target/ppc/cpu.h"
14 #include "hw/ppc/fdt.h"
15 #include "hw/pci-host/pnv_phb4_regs.h"
16 #include "hw/pci-host/pnv_phb4.h"
17 #include "hw/ppc/pnv_xscom.h"
18 #include "hw/pci/pci_bridge.h"
19 #include "hw/pci/pci_bus.h"
20 #include "hw/ppc/pnv.h"
21 #include "hw/qdev-properties.h"
22
23 #include <libfdt.h>
24
25 #define phb_pec_error(pec, fmt, ...) \
26 qemu_log_mask(LOG_GUEST_ERROR, "phb4_pec[%d:%d]: " fmt "\n", \
27 (pec)->chip_id, (pec)->index, ## __VA_ARGS__)
28
29
30 static uint64_t pnv_pec_nest_xscom_read(void *opaque, hwaddr addr,
31 unsigned size)
32 {
33 PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
34 uint32_t reg = addr >> 3;
35
36 /* TODO: add list of allowed registers and error out if not */
37 return pec->nest_regs[reg];
38 }
39
40 static void pnv_pec_nest_xscom_write(void *opaque, hwaddr addr,
41 uint64_t val, unsigned size)
42 {
43 PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
44 uint32_t reg = addr >> 3;
45
46 switch (reg) {
47 case PEC_NEST_PBCQ_HW_CONFIG:
48 case PEC_NEST_DROP_PRIO_CTRL:
49 case PEC_NEST_PBCQ_ERR_INJECT:
50 case PEC_NEST_PCI_NEST_CLK_TRACE_CTL:
51 case PEC_NEST_PBCQ_PMON_CTRL:
52 case PEC_NEST_PBCQ_PBUS_ADDR_EXT:
53 case PEC_NEST_PBCQ_PRED_VEC_TIMEOUT:
54 case PEC_NEST_CAPP_CTRL:
55 case PEC_NEST_PBCQ_READ_STK_OVR:
56 case PEC_NEST_PBCQ_WRITE_STK_OVR:
57 case PEC_NEST_PBCQ_STORE_STK_OVR:
58 case PEC_NEST_PBCQ_RETRY_BKOFF_CTRL:
59 pec->nest_regs[reg] = val;
60 break;
61 default:
62 phb_pec_error(pec, "%s @0x%"HWADDR_PRIx"=%"PRIx64"\n", __func__,
63 addr, val);
64 }
65 }
66
67 static const MemoryRegionOps pnv_pec_nest_xscom_ops = {
68 .read = pnv_pec_nest_xscom_read,
69 .write = pnv_pec_nest_xscom_write,
70 .valid.min_access_size = 8,
71 .valid.max_access_size = 8,
72 .impl.min_access_size = 8,
73 .impl.max_access_size = 8,
74 .endianness = DEVICE_BIG_ENDIAN,
75 };
76
77 static uint64_t pnv_pec_pci_xscom_read(void *opaque, hwaddr addr,
78 unsigned size)
79 {
80 PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
81 uint32_t reg = addr >> 3;
82
83 /* TODO: add list of allowed registers and error out if not */
84 return pec->pci_regs[reg];
85 }
86
87 static void pnv_pec_pci_xscom_write(void *opaque, hwaddr addr,
88 uint64_t val, unsigned size)
89 {
90 PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
91 uint32_t reg = addr >> 3;
92
93 switch (reg) {
94 case PEC_PCI_PBAIB_HW_CONFIG:
95 case PEC_PCI_PBAIB_READ_STK_OVR:
96 pec->pci_regs[reg] = val;
97 break;
98 default:
99 phb_pec_error(pec, "%s @0x%"HWADDR_PRIx"=%"PRIx64"\n", __func__,
100 addr, val);
101 }
102 }
103
104 static const MemoryRegionOps pnv_pec_pci_xscom_ops = {
105 .read = pnv_pec_pci_xscom_read,
106 .write = pnv_pec_pci_xscom_write,
107 .valid.min_access_size = 8,
108 .valid.max_access_size = 8,
109 .impl.min_access_size = 8,
110 .impl.max_access_size = 8,
111 .endianness = DEVICE_BIG_ENDIAN,
112 };
113
114 static uint64_t pnv_pec_stk_nest_xscom_read(void *opaque, hwaddr addr,
115 unsigned size)
116 {
117 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
118 uint32_t reg = addr >> 3;
119
120 /* TODO: add list of allowed registers and error out if not */
121 return stack->nest_regs[reg];
122 }
123
124 static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack)
125 {
126 PnvPhb4PecState *pec = stack->pec;
127 MemoryRegion *sysmem = pec->system_memory;
128 uint64_t bar_en = stack->nest_regs[PEC_NEST_STK_BAR_EN];
129 uint64_t bar, mask, size;
130 char name[64];
131
132 /*
133 * NOTE: This will really not work well if those are remapped
134 * after the PHB has created its sub regions. We could do better
135 * if we had a way to resize regions but we don't really care
136 * that much in practice as the stuff below really only happens
137 * once early during boot
138 */
139
140 /* Handle unmaps */
141 if (memory_region_is_mapped(&stack->mmbar0) &&
142 !(bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) {
143 memory_region_del_subregion(sysmem, &stack->mmbar0);
144 }
145 if (memory_region_is_mapped(&stack->mmbar1) &&
146 !(bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) {
147 memory_region_del_subregion(sysmem, &stack->mmbar1);
148 }
149 if (memory_region_is_mapped(&stack->phbbar) &&
150 !(bar_en & PEC_NEST_STK_BAR_EN_PHB)) {
151 memory_region_del_subregion(sysmem, &stack->phbbar);
152 }
153 if (memory_region_is_mapped(&stack->intbar) &&
154 !(bar_en & PEC_NEST_STK_BAR_EN_INT)) {
155 memory_region_del_subregion(sysmem, &stack->intbar);
156 }
157
158 /* Update PHB */
159 pnv_phb4_update_regions(stack);
160
161 /* Handle maps */
162 if (!memory_region_is_mapped(&stack->mmbar0) &&
163 (bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) {
164 bar = stack->nest_regs[PEC_NEST_STK_MMIO_BAR0] >> 8;
165 mask = stack->nest_regs[PEC_NEST_STK_MMIO_BAR0_MASK];
166 size = ((~mask) >> 8) + 1;
167 snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-mmio0",
168 pec->chip_id, pec->index, stack->stack_no);
169 memory_region_init(&stack->mmbar0, OBJECT(stack), name, size);
170 memory_region_add_subregion(sysmem, bar, &stack->mmbar0);
171 stack->mmio0_base = bar;
172 stack->mmio0_size = size;
173 }
174 if (!memory_region_is_mapped(&stack->mmbar1) &&
175 (bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) {
176 bar = stack->nest_regs[PEC_NEST_STK_MMIO_BAR1] >> 8;
177 mask = stack->nest_regs[PEC_NEST_STK_MMIO_BAR1_MASK];
178 size = ((~mask) >> 8) + 1;
179 snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-mmio1",
180 pec->chip_id, pec->index, stack->stack_no);
181 memory_region_init(&stack->mmbar1, OBJECT(stack), name, size);
182 memory_region_add_subregion(sysmem, bar, &stack->mmbar1);
183 stack->mmio1_base = bar;
184 stack->mmio1_size = size;
185 }
186 if (!memory_region_is_mapped(&stack->phbbar) &&
187 (bar_en & PEC_NEST_STK_BAR_EN_PHB)) {
188 bar = stack->nest_regs[PEC_NEST_STK_PHB_REGS_BAR] >> 8;
189 size = PNV_PHB4_NUM_REGS << 3;
190 snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-phb",
191 pec->chip_id, pec->index, stack->stack_no);
192 memory_region_init(&stack->phbbar, OBJECT(stack), name, size);
193 memory_region_add_subregion(sysmem, bar, &stack->phbbar);
194 }
195 if (!memory_region_is_mapped(&stack->intbar) &&
196 (bar_en & PEC_NEST_STK_BAR_EN_INT)) {
197 bar = stack->nest_regs[PEC_NEST_STK_INT_BAR] >> 8;
198 size = PNV_PHB4_MAX_INTs << 16;
199 snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-int",
200 stack->pec->chip_id, stack->pec->index, stack->stack_no);
201 memory_region_init(&stack->intbar, OBJECT(stack), name, size);
202 memory_region_add_subregion(sysmem, bar, &stack->intbar);
203 }
204
205 /* Update PHB */
206 pnv_phb4_update_regions(stack);
207 }
208
209 static void pnv_pec_stk_nest_xscom_write(void *opaque, hwaddr addr,
210 uint64_t val, unsigned size)
211 {
212 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
213 PnvPhb4PecState *pec = stack->pec;
214 uint32_t reg = addr >> 3;
215
216 switch (reg) {
217 case PEC_NEST_STK_PCI_NEST_FIR:
218 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] = val;
219 break;
220 case PEC_NEST_STK_PCI_NEST_FIR_CLR:
221 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] &= val;
222 break;
223 case PEC_NEST_STK_PCI_NEST_FIR_SET:
224 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] |= val;
225 break;
226 case PEC_NEST_STK_PCI_NEST_FIR_MSK:
227 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] = val;
228 break;
229 case PEC_NEST_STK_PCI_NEST_FIR_MSKC:
230 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] &= val;
231 break;
232 case PEC_NEST_STK_PCI_NEST_FIR_MSKS:
233 stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] |= val;
234 break;
235 case PEC_NEST_STK_PCI_NEST_FIR_ACT0:
236 case PEC_NEST_STK_PCI_NEST_FIR_ACT1:
237 stack->nest_regs[reg] = val;
238 break;
239 case PEC_NEST_STK_PCI_NEST_FIR_WOF:
240 stack->nest_regs[reg] = 0;
241 break;
242 case PEC_NEST_STK_ERR_REPORT_0:
243 case PEC_NEST_STK_ERR_REPORT_1:
244 case PEC_NEST_STK_PBCQ_GNRL_STATUS:
245 /* Flag error ? */
246 break;
247 case PEC_NEST_STK_PBCQ_MODE:
248 stack->nest_regs[reg] = val & 0xff00000000000000ull;
249 break;
250 case PEC_NEST_STK_MMIO_BAR0:
251 case PEC_NEST_STK_MMIO_BAR0_MASK:
252 case PEC_NEST_STK_MMIO_BAR1:
253 case PEC_NEST_STK_MMIO_BAR1_MASK:
254 if (stack->nest_regs[PEC_NEST_STK_BAR_EN] &
255 (PEC_NEST_STK_BAR_EN_MMIO0 |
256 PEC_NEST_STK_BAR_EN_MMIO1)) {
257 phb_pec_error(pec, "Changing enabled BAR unsupported\n");
258 }
259 stack->nest_regs[reg] = val & 0xffffffffff000000ull;
260 break;
261 case PEC_NEST_STK_PHB_REGS_BAR:
262 if (stack->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_PHB) {
263 phb_pec_error(pec, "Changing enabled BAR unsupported\n");
264 }
265 stack->nest_regs[reg] = val & 0xffffffffffc00000ull;
266 break;
267 case PEC_NEST_STK_INT_BAR:
268 if (stack->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_INT) {
269 phb_pec_error(pec, "Changing enabled BAR unsupported\n");
270 }
271 stack->nest_regs[reg] = val & 0xfffffff000000000ull;
272 break;
273 case PEC_NEST_STK_BAR_EN:
274 stack->nest_regs[reg] = val & 0xf000000000000000ull;
275 pnv_pec_stk_update_map(stack);
276 break;
277 case PEC_NEST_STK_DATA_FRZ_TYPE:
278 case PEC_NEST_STK_PBCQ_TUN_BAR:
279 /* Not used for now */
280 stack->nest_regs[reg] = val;
281 break;
282 default:
283 qemu_log_mask(LOG_UNIMP, "phb4_pec: nest_xscom_write 0x%"HWADDR_PRIx
284 "=%"PRIx64"\n", addr, val);
285 }
286 }
287
288 static const MemoryRegionOps pnv_pec_stk_nest_xscom_ops = {
289 .read = pnv_pec_stk_nest_xscom_read,
290 .write = pnv_pec_stk_nest_xscom_write,
291 .valid.min_access_size = 8,
292 .valid.max_access_size = 8,
293 .impl.min_access_size = 8,
294 .impl.max_access_size = 8,
295 .endianness = DEVICE_BIG_ENDIAN,
296 };
297
298 static uint64_t pnv_pec_stk_pci_xscom_read(void *opaque, hwaddr addr,
299 unsigned size)
300 {
301 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
302 uint32_t reg = addr >> 3;
303
304 /* TODO: add list of allowed registers and error out if not */
305 return stack->pci_regs[reg];
306 }
307
308 static void pnv_pec_stk_pci_xscom_write(void *opaque, hwaddr addr,
309 uint64_t val, unsigned size)
310 {
311 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
312 uint32_t reg = addr >> 3;
313
314 switch (reg) {
315 case PEC_PCI_STK_PCI_FIR:
316 stack->nest_regs[reg] = val;
317 break;
318 case PEC_PCI_STK_PCI_FIR_CLR:
319 stack->nest_regs[PEC_PCI_STK_PCI_FIR] &= val;
320 break;
321 case PEC_PCI_STK_PCI_FIR_SET:
322 stack->nest_regs[PEC_PCI_STK_PCI_FIR] |= val;
323 break;
324 case PEC_PCI_STK_PCI_FIR_MSK:
325 stack->nest_regs[reg] = val;
326 break;
327 case PEC_PCI_STK_PCI_FIR_MSKC:
328 stack->nest_regs[PEC_PCI_STK_PCI_FIR_MSK] &= val;
329 break;
330 case PEC_PCI_STK_PCI_FIR_MSKS:
331 stack->nest_regs[PEC_PCI_STK_PCI_FIR_MSK] |= val;
332 break;
333 case PEC_PCI_STK_PCI_FIR_ACT0:
334 case PEC_PCI_STK_PCI_FIR_ACT1:
335 stack->nest_regs[reg] = val;
336 break;
337 case PEC_PCI_STK_PCI_FIR_WOF:
338 stack->nest_regs[reg] = 0;
339 break;
340 case PEC_PCI_STK_ETU_RESET:
341 stack->nest_regs[reg] = val & 0x8000000000000000ull;
342 /* TODO: Implement reset */
343 break;
344 case PEC_PCI_STK_PBAIB_ERR_REPORT:
345 break;
346 case PEC_PCI_STK_PBAIB_TX_CMD_CRED:
347 case PEC_PCI_STK_PBAIB_TX_DAT_CRED:
348 stack->nest_regs[reg] = val;
349 break;
350 default:
351 qemu_log_mask(LOG_UNIMP, "phb4_pec_stk: pci_xscom_write 0x%"HWADDR_PRIx
352 "=%"PRIx64"\n", addr, val);
353 }
354 }
355
356 static const MemoryRegionOps pnv_pec_stk_pci_xscom_ops = {
357 .read = pnv_pec_stk_pci_xscom_read,
358 .write = pnv_pec_stk_pci_xscom_write,
359 .valid.min_access_size = 8,
360 .valid.max_access_size = 8,
361 .impl.min_access_size = 8,
362 .impl.max_access_size = 8,
363 .endianness = DEVICE_BIG_ENDIAN,
364 };
365
366 static void pnv_pec_instance_init(Object *obj)
367 {
368 PnvPhb4PecState *pec = PNV_PHB4_PEC(obj);
369 int i;
370
371 for (i = 0; i < PHB4_PEC_MAX_STACKS; i++) {
372 object_initialize_child(obj, "stack[*]", &pec->stacks[i],
373 TYPE_PNV_PHB4_PEC_STACK);
374 }
375 }
376
377 static void pnv_pec_realize(DeviceState *dev, Error **errp)
378 {
379 PnvPhb4PecState *pec = PNV_PHB4_PEC(dev);
380 char name[64];
381 int i;
382
383 assert(pec->system_memory);
384
385 /* Create stacks */
386 for (i = 0; i < pec->num_stacks; i++) {
387 PnvPhb4PecStack *stack = &pec->stacks[i];
388 Object *stk_obj = OBJECT(stack);
389
390 object_property_set_int(stk_obj, "stack-no", i, &error_abort);
391 object_property_set_link(stk_obj, "pec", OBJECT(pec), &error_abort);
392 if (!qdev_realize(DEVICE(stk_obj), NULL, errp)) {
393 return;
394 }
395 }
396 for (; i < PHB4_PEC_MAX_STACKS; i++) {
397 object_unparent(OBJECT(&pec->stacks[i]));
398 }
399
400 /* Initialize the XSCOM regions for the PEC registers */
401 snprintf(name, sizeof(name), "xscom-pec-%d.%d-nest", pec->chip_id,
402 pec->index);
403 pnv_xscom_region_init(&pec->nest_regs_mr, OBJECT(dev),
404 &pnv_pec_nest_xscom_ops, pec, name,
405 PHB4_PEC_NEST_REGS_COUNT);
406
407 snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci", pec->chip_id,
408 pec->index);
409 pnv_xscom_region_init(&pec->pci_regs_mr, OBJECT(dev),
410 &pnv_pec_pci_xscom_ops, pec, name,
411 PHB4_PEC_PCI_REGS_COUNT);
412 }
413
414 static int pnv_pec_dt_xscom(PnvXScomInterface *dev, void *fdt,
415 int xscom_offset)
416 {
417 PnvPhb4PecState *pec = PNV_PHB4_PEC(dev);
418 PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(dev);
419 uint32_t nbase = pecc->xscom_nest_base(pec);
420 uint32_t pbase = pecc->xscom_pci_base(pec);
421 int offset, i;
422 char *name;
423 uint32_t reg[] = {
424 cpu_to_be32(nbase),
425 cpu_to_be32(pecc->xscom_nest_size),
426 cpu_to_be32(pbase),
427 cpu_to_be32(pecc->xscom_pci_size),
428 };
429
430 name = g_strdup_printf("pbcq@%x", nbase);
431 offset = fdt_add_subnode(fdt, xscom_offset, name);
432 _FDT(offset);
433 g_free(name);
434
435 _FDT((fdt_setprop(fdt, offset, "reg", reg, sizeof(reg))));
436
437 _FDT((fdt_setprop_cell(fdt, offset, "ibm,pec-index", pec->index)));
438 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 1)));
439 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0)));
440 _FDT((fdt_setprop(fdt, offset, "compatible", pecc->compat,
441 pecc->compat_size)));
442
443 for (i = 0; i < pec->num_stacks; i++) {
444 PnvPhb4PecStack *stack = &pec->stacks[i];
445 PnvPHB4 *phb = &stack->phb;
446 int stk_offset;
447
448 name = g_strdup_printf("stack@%x", i);
449 stk_offset = fdt_add_subnode(fdt, offset, name);
450 _FDT(stk_offset);
451 g_free(name);
452 _FDT((fdt_setprop(fdt, stk_offset, "compatible", pecc->stk_compat,
453 pecc->stk_compat_size)));
454 _FDT((fdt_setprop_cell(fdt, stk_offset, "reg", i)));
455 _FDT((fdt_setprop_cell(fdt, stk_offset, "ibm,phb-index", phb->phb_id)));
456 }
457
458 return 0;
459 }
460
461 static Property pnv_pec_properties[] = {
462 DEFINE_PROP_UINT32("index", PnvPhb4PecState, index, 0),
463 DEFINE_PROP_UINT32("num-stacks", PnvPhb4PecState, num_stacks, 0),
464 DEFINE_PROP_UINT32("chip-id", PnvPhb4PecState, chip_id, 0),
465 DEFINE_PROP_LINK("system-memory", PnvPhb4PecState, system_memory,
466 TYPE_MEMORY_REGION, MemoryRegion *),
467 DEFINE_PROP_END_OF_LIST(),
468 };
469
470 static uint32_t pnv_pec_xscom_pci_base(PnvPhb4PecState *pec)
471 {
472 return PNV9_XSCOM_PEC_PCI_BASE + 0x1000000 * pec->index;
473 }
474
475 static uint32_t pnv_pec_xscom_nest_base(PnvPhb4PecState *pec)
476 {
477 return PNV9_XSCOM_PEC_NEST_BASE + 0x400 * pec->index;
478 }
479
480 static void pnv_pec_class_init(ObjectClass *klass, void *data)
481 {
482 DeviceClass *dc = DEVICE_CLASS(klass);
483 PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
484 PnvPhb4PecClass *pecc = PNV_PHB4_PEC_CLASS(klass);
485 static const char compat[] = "ibm,power9-pbcq";
486 static const char stk_compat[] = "ibm,power9-phb-stack";
487
488 xdc->dt_xscom = pnv_pec_dt_xscom;
489
490 dc->realize = pnv_pec_realize;
491 device_class_set_props(dc, pnv_pec_properties);
492 dc->user_creatable = false;
493
494 pecc->xscom_nest_base = pnv_pec_xscom_nest_base;
495 pecc->xscom_pci_base = pnv_pec_xscom_pci_base;
496 pecc->xscom_nest_size = PNV9_XSCOM_PEC_NEST_SIZE;
497 pecc->xscom_pci_size = PNV9_XSCOM_PEC_PCI_SIZE;
498 pecc->compat = compat;
499 pecc->compat_size = sizeof(compat);
500 pecc->stk_compat = stk_compat;
501 pecc->stk_compat_size = sizeof(stk_compat);
502 }
503
504 static const TypeInfo pnv_pec_type_info = {
505 .name = TYPE_PNV_PHB4_PEC,
506 .parent = TYPE_DEVICE,
507 .instance_size = sizeof(PnvPhb4PecState),
508 .instance_init = pnv_pec_instance_init,
509 .class_init = pnv_pec_class_init,
510 .class_size = sizeof(PnvPhb4PecClass),
511 .interfaces = (InterfaceInfo[]) {
512 { TYPE_PNV_XSCOM_INTERFACE },
513 { }
514 }
515 };
516
517 static void pnv_pec_stk_instance_init(Object *obj)
518 {
519 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(obj);
520
521 object_initialize_child(obj, "phb", &stack->phb, TYPE_PNV_PHB4);
522 }
523
524 static void pnv_pec_stk_realize(DeviceState *dev, Error **errp)
525 {
526 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(dev);
527 PnvPhb4PecState *pec = stack->pec;
528 char name[64];
529
530 assert(pec);
531
532 /* Initialize the XSCOM regions for the stack registers */
533 snprintf(name, sizeof(name), "xscom-pec-%d.%d-nest-stack-%d",
534 pec->chip_id, pec->index, stack->stack_no);
535 pnv_xscom_region_init(&stack->nest_regs_mr, OBJECT(stack),
536 &pnv_pec_stk_nest_xscom_ops, stack, name,
537 PHB4_PEC_NEST_STK_REGS_COUNT);
538
539 snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-stack-%d",
540 pec->chip_id, pec->index, stack->stack_no);
541 pnv_xscom_region_init(&stack->pci_regs_mr, OBJECT(stack),
542 &pnv_pec_stk_pci_xscom_ops, stack, name,
543 PHB4_PEC_PCI_STK_REGS_COUNT);
544
545 /* PHB pass-through */
546 snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-stack-%d-phb",
547 pec->chip_id, pec->index, stack->stack_no);
548 pnv_xscom_region_init(&stack->phb_regs_mr, OBJECT(&stack->phb),
549 &pnv_phb4_xscom_ops, &stack->phb, name, 0x40);
550
551 /*
552 * Let the machine/chip realize the PHB object to customize more
553 * easily some fields
554 */
555 }
556
557 static Property pnv_pec_stk_properties[] = {
558 DEFINE_PROP_UINT32("stack-no", PnvPhb4PecStack, stack_no, 0),
559 DEFINE_PROP_LINK("pec", PnvPhb4PecStack, pec, TYPE_PNV_PHB4_PEC,
560 PnvPhb4PecState *),
561 DEFINE_PROP_END_OF_LIST(),
562 };
563
564 static void pnv_pec_stk_class_init(ObjectClass *klass, void *data)
565 {
566 DeviceClass *dc = DEVICE_CLASS(klass);
567
568 device_class_set_props(dc, pnv_pec_stk_properties);
569 dc->realize = pnv_pec_stk_realize;
570 dc->user_creatable = false;
571
572 /* TODO: reset regs ? */
573 }
574
575 static const TypeInfo pnv_pec_stk_type_info = {
576 .name = TYPE_PNV_PHB4_PEC_STACK,
577 .parent = TYPE_DEVICE,
578 .instance_size = sizeof(PnvPhb4PecStack),
579 .instance_init = pnv_pec_stk_instance_init,
580 .class_init = pnv_pec_stk_class_init,
581 .interfaces = (InterfaceInfo[]) {
582 { TYPE_PNV_XSCOM_INTERFACE },
583 { }
584 }
585 };
586
587 static void pnv_pec_register_types(void)
588 {
589 type_register_static(&pnv_pec_type_info);
590 type_register_static(&pnv_pec_stk_type_info);
591 }
592
593 type_init(pnv_pec_register_types);