1 /*
2 * Marvell Discovery II MV64361 System Controller for
3 * QEMU PowerPC CHRP (Genesi/bPlan Pegasos II) hardware System Emulator
4 *
5 * Copyright (c) 2018-2020 BALATON Zoltan
6 *
7 * This work is licensed under the GNU GPL license version 2 or later.
8 *
9 */
10
11 #include "qemu/osdep.h"
12 #include "qemu/units.h"
13 #include "qapi/error.h"
14 #include "hw/sysbus.h"
15 #include "hw/pci/pci_device.h"
16 #include "hw/pci/pci_host.h"
17 #include "hw/irq.h"
18 #include "hw/intc/i8259.h"
19 #include "hw/qdev-properties.h"
20 #include "exec/address-spaces.h"
21 #include "qemu/log.h"
22 #include "qemu/error-report.h"
23 #include "trace.h"
24 #include "hw/pci-host/mv64361.h"
25 #include "mv643xx.h"
26
27 #define TYPE_MV64361_PCI_BRIDGE "mv64361-pcibridge"
28
mv64361_pcibridge_class_init(ObjectClass * klass,void * data)29 static void mv64361_pcibridge_class_init(ObjectClass *klass, void *data)
30 {
31 DeviceClass *dc = DEVICE_CLASS(klass);
32 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
33
34 k->vendor_id = PCI_VENDOR_ID_MARVELL;
35 k->device_id = PCI_DEVICE_ID_MARVELL_MV6436X;
36 k->class_id = PCI_CLASS_BRIDGE_HOST;
37 /*
38 * PCI-facing part of the host bridge,
39 * not usable without the host-facing part
40 */
41 dc->user_creatable = false;
42 }
43
44 static const TypeInfo mv64361_pcibridge_info = {
45 .name = TYPE_MV64361_PCI_BRIDGE,
46 .parent = TYPE_PCI_DEVICE,
47 .instance_size = sizeof(PCIDevice),
48 .class_init = mv64361_pcibridge_class_init,
49 .interfaces = (InterfaceInfo[]) {
50 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
51 { },
52 },
53 };
54
55
56 #define TYPE_MV64361_PCI "mv64361-pcihost"
57 OBJECT_DECLARE_SIMPLE_TYPE(MV64361PCIState, MV64361_PCI)
58
59 struct MV64361PCIState {
60 PCIHostState parent_obj;
61
62 uint8_t index;
63 MemoryRegion io;
64 MemoryRegion mem;
65 qemu_irq irq[PCI_NUM_PINS];
66
67 uint32_t io_base;
68 uint32_t io_size;
69 uint32_t mem_base[4];
70 uint32_t mem_size[4];
71 uint64_t remap[5];
72 };
73
mv64361_pcihost_set_irq(void * opaque,int n,int level)74 static void mv64361_pcihost_set_irq(void *opaque, int n, int level)
75 {
76 MV64361PCIState *s = opaque;
77 qemu_set_irq(s->irq[n], level);
78 }
79
mv64361_pcihost_realize(DeviceState * dev,Error ** errp)80 static void mv64361_pcihost_realize(DeviceState *dev, Error **errp)
81 {
82 MV64361PCIState *s = MV64361_PCI(dev);
83 PCIHostState *h = PCI_HOST_BRIDGE(dev);
84 char *name;
85
86 name = g_strdup_printf("pci%d-io", s->index);
87 memory_region_init(&s->io, OBJECT(dev), name, 0x10000);
88 g_free(name);
89 name = g_strdup_printf("pci%d-mem", s->index);
90 memory_region_init(&s->mem, OBJECT(dev), name, 1ULL << 32);
91 g_free(name);
92 name = g_strdup_printf("pci.%d", s->index);
93 h->bus = pci_register_root_bus(dev, name, mv64361_pcihost_set_irq,
94 pci_swizzle_map_irq_fn, dev,
95 &s->mem, &s->io, 0, 4, TYPE_PCI_BUS);
96 g_free(name);
97 pci_create_simple(h->bus, 0, TYPE_MV64361_PCI_BRIDGE);
98 }
99
100 static Property mv64361_pcihost_props[] = {
101 DEFINE_PROP_UINT8("index", MV64361PCIState, index, 0),
102 DEFINE_PROP_END_OF_LIST()
103 };
104
mv64361_pcihost_class_init(ObjectClass * klass,void * data)105 static void mv64361_pcihost_class_init(ObjectClass *klass, void *data)
106 {
107 DeviceClass *dc = DEVICE_CLASS(klass);
108
109 dc->realize = mv64361_pcihost_realize;
110 device_class_set_props(dc, mv64361_pcihost_props);
111 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
112 }
113
114 static const TypeInfo mv64361_pcihost_info = {
115 .name = TYPE_MV64361_PCI,
116 .parent = TYPE_PCI_HOST_BRIDGE,
117 .instance_size = sizeof(MV64361PCIState),
118 .class_init = mv64361_pcihost_class_init,
119 };
120
mv64361_pci_register_types(void)121 static void mv64361_pci_register_types(void)
122 {
123 type_register_static(&mv64361_pcihost_info);
124 type_register_static(&mv64361_pcibridge_info);
125 }
126
127 type_init(mv64361_pci_register_types)
128
129
130 OBJECT_DECLARE_SIMPLE_TYPE(MV64361State, MV64361)
131
132 struct MV64361State {
133 SysBusDevice parent_obj;
134
135 MemoryRegion regs;
136 MV64361PCIState pci[2];
137 MemoryRegion cpu_win[19];
138 qemu_irq cpu_irq;
139
140 /* registers state */
141 uint32_t cpu_conf;
142 uint32_t regs_base;
143 uint32_t base_addr_enable;
144 uint64_t main_int_cr;
145 uint64_t cpu0_int_mask;
146 uint32_t gpp_io;
147 uint32_t gpp_level;
148 uint32_t gpp_value;
149 uint32_t gpp_int_cr;
150 uint32_t gpp_int_mask;
151 bool gpp_int_level;
152 };
153
154 enum mv64361_irq_cause {
155 MV64361_IRQ_DEVERR = 1,
156 MV64361_IRQ_DMAERR = 2,
157 MV64361_IRQ_CPUERR = 3,
158 MV64361_IRQ_IDMA0 = 4,
159 MV64361_IRQ_IDMA1 = 5,
160 MV64361_IRQ_IDMA2 = 6,
161 MV64361_IRQ_IDMA3 = 7,
162 MV64361_IRQ_TIMER0 = 8,
163 MV64361_IRQ_TIMER1 = 9,
164 MV64361_IRQ_TIMER2 = 10,
165 MV64361_IRQ_TIMER3 = 11,
166 MV64361_IRQ_PCI0 = 12,
167 MV64361_IRQ_SRAMERR = 13,
168 MV64361_IRQ_GBEERR = 14,
169 MV64361_IRQ_CERR = 15,
170 MV64361_IRQ_PCI1 = 16,
171 MV64361_IRQ_DRAMERR = 17,
172 MV64361_IRQ_WDNMI = 18,
173 MV64361_IRQ_WDE = 19,
174 MV64361_IRQ_PCI0IN = 20,
175 MV64361_IRQ_PCI0OUT = 21,
176 MV64361_IRQ_PCI1IN = 22,
177 MV64361_IRQ_PCI1OUT = 23,
178 MV64361_IRQ_P1_GPP0_7 = 24,
179 MV64361_IRQ_P1_GPP8_15 = 25,
180 MV64361_IRQ_P1_GPP16_23 = 26,
181 MV64361_IRQ_P1_GPP24_31 = 27,
182 MV64361_IRQ_P1_CPU_DB = 28,
183 /* 29-31: reserved */
184 MV64361_IRQ_GBE0 = 32,
185 MV64361_IRQ_GBE1 = 33,
186 MV64361_IRQ_GBE2 = 34,
187 /* 35: reserved */
188 MV64361_IRQ_SDMA0 = 36,
189 MV64361_IRQ_TWSI = 37,
190 MV64361_IRQ_SDMA1 = 38,
191 MV64361_IRQ_BRG = 39,
192 MV64361_IRQ_MPSC0 = 40,
193 MV64361_IRQ_MPSC1 = 41,
194 MV64361_IRQ_G0RX = 42,
195 MV64361_IRQ_G0TX = 43,
196 MV64361_IRQ_G0MISC = 44,
197 MV64361_IRQ_G1RX = 45,
198 MV64361_IRQ_G1TX = 46,
199 MV64361_IRQ_G1MISC = 47,
200 MV64361_IRQ_G2RX = 48,
201 MV64361_IRQ_G2TX = 49,
202 MV64361_IRQ_G2MISC = 50,
203 /* 51-55: reserved */
204 MV64361_IRQ_P0_GPP0_7 = 56,
205 MV64361_IRQ_P0_GPP8_15 = 57,
206 MV64361_IRQ_P0_GPP16_23 = 58,
207 MV64361_IRQ_P0_GPP24_31 = 59,
208 MV64361_IRQ_P0_CPU_DB = 60,
209 /* 61-63: reserved */
210 };
211
mv64361_get_pci_bus(DeviceState * dev,int n)212 PCIBus *mv64361_get_pci_bus(DeviceState *dev, int n)
213 {
214 MV64361State *mv = MV64361(dev);
215 return PCI_HOST_BRIDGE(&mv->pci[n])->bus;
216 }
217
unmap_region(MemoryRegion * mr)218 static void unmap_region(MemoryRegion *mr)
219 {
220 if (memory_region_is_mapped(mr)) {
221 memory_region_del_subregion(get_system_memory(), mr);
222 object_unparent(OBJECT(mr));
223 }
224 }
225
map_pci_region(MemoryRegion * mr,MemoryRegion * parent,struct Object * owner,const char * name,hwaddr poffs,uint64_t size,hwaddr moffs)226 static void map_pci_region(MemoryRegion *mr, MemoryRegion *parent,
227 struct Object *owner, const char *name,
228 hwaddr poffs, uint64_t size, hwaddr moffs)
229 {
230 memory_region_init_alias(mr, owner, name, parent, poffs, size);
231 memory_region_add_subregion(get_system_memory(), moffs, mr);
232 trace_mv64361_region_map(name, poffs, size, moffs);
233 }
234
set_mem_windows(MV64361State * s,uint32_t val)235 static void set_mem_windows(MV64361State *s, uint32_t val)
236 {
237 MV64361PCIState *p;
238 MemoryRegion *mr;
239 uint32_t mask;
240 int i;
241
242 val &= 0x1fffff;
243 for (mask = 1, i = 0; i < 21; i++, mask <<= 1) {
244 if ((val & mask) != (s->base_addr_enable & mask)) {
245 trace_mv64361_region_enable(!(val & mask) ? "enable" : "disable", i);
246 /*
247 * 0-3 are SDRAM chip selects but we map all RAM directly
248 * 4-7 are device chip selects (not sure what those are)
249 * 8 is Boot device (ROM) chip select but we map that directly too
250 */
251 if (i == 9) {
252 p = &s->pci[0];
253 mr = &s->cpu_win[i];
254 unmap_region(mr);
255 if (!(val & mask)) {
256 map_pci_region(mr, &p->io, OBJECT(s), "pci0-io-win",
257 p->remap[4], (p->io_size + 1) << 16,
258 (p->io_base & 0xfffff) << 16);
259 }
260 } else if (i == 10) {
261 p = &s->pci[0];
262 mr = &s->cpu_win[i];
263 unmap_region(mr);
264 if (!(val & mask)) {
265 map_pci_region(mr, &p->mem, OBJECT(s), "pci0-mem0-win",
266 p->remap[0], (p->mem_size[0] + 1) << 16,
267 (p->mem_base[0] & 0xfffff) << 16);
268 }
269 } else if (i == 11) {
270 p = &s->pci[0];
271 mr = &s->cpu_win[i];
272 unmap_region(mr);
273 if (!(val & mask)) {
274 map_pci_region(mr, &p->mem, OBJECT(s), "pci0-mem1-win",
275 p->remap[1], (p->mem_size[1] + 1) << 16,
276 (p->mem_base[1] & 0xfffff) << 16);
277 }
278 } else if (i == 12) {
279 p = &s->pci[0];
280 mr = &s->cpu_win[i];
281 unmap_region(mr);
282 if (!(val & mask)) {
283 map_pci_region(mr, &p->mem, OBJECT(s), "pci0-mem2-win",
284 p->remap[2], (p->mem_size[2] + 1) << 16,
285 (p->mem_base[2] & 0xfffff) << 16);
286 }
287 } else if (i == 13) {
288 p = &s->pci[0];
289 mr = &s->cpu_win[i];
290 unmap_region(mr);
291 if (!(val & mask)) {
292 map_pci_region(mr, &p->mem, OBJECT(s), "pci0-mem3-win",
293 p->remap[3], (p->mem_size[3] + 1) << 16,
294 (p->mem_base[3] & 0xfffff) << 16);
295 }
296 } else if (i == 14) {
297 p = &s->pci[1];
298 mr = &s->cpu_win[i];
299 unmap_region(mr);
300 if (!(val & mask)) {
301 map_pci_region(mr, &p->io, OBJECT(s), "pci1-io-win",
302 p->remap[4], (p->io_size + 1) << 16,
303 (p->io_base & 0xfffff) << 16);
304 }
305 } else if (i == 15) {
306 p = &s->pci[1];
307 mr = &s->cpu_win[i];
308 unmap_region(mr);
309 if (!(val & mask)) {
310 map_pci_region(mr, &p->mem, OBJECT(s), "pci1-mem0-win",
311 p->remap[0], (p->mem_size[0] + 1) << 16,
312 (p->mem_base[0] & 0xfffff) << 16);
313 }
314 } else if (i == 16) {
315 p = &s->pci[1];
316 mr = &s->cpu_win[i];
317 unmap_region(mr);
318 if (!(val & mask)) {
319 map_pci_region(mr, &p->mem, OBJECT(s), "pci1-mem1-win",
320 p->remap[1], (p->mem_size[1] + 1) << 16,
321 (p->mem_base[1] & 0xfffff) << 16);
322 }
323 } else if (i == 17) {
324 p = &s->pci[1];
325 mr = &s->cpu_win[i];
326 unmap_region(mr);
327 if (!(val & mask)) {
328 map_pci_region(mr, &p->mem, OBJECT(s), "pci1-mem2-win",
329 p->remap[2], (p->mem_size[2] + 1) << 16,
330 (p->mem_base[2] & 0xfffff) << 16);
331 }
332 } else if (i == 18) {
333 p = &s->pci[1];
334 mr = &s->cpu_win[i];
335 unmap_region(mr);
336 if (!(val & mask)) {
337 map_pci_region(mr, &p->mem, OBJECT(s), "pci1-mem3-win",
338 p->remap[3], (p->mem_size[3] + 1) << 16,
339 (p->mem_base[3] & 0xfffff) << 16);
340 }
341 /* 19 is integrated SRAM */
342 } else if (i == 20) {
343 mr = &s->regs;
344 unmap_region(mr);
345 if (!(val & mask)) {
346 memory_region_add_subregion(get_system_memory(),
347 (s->regs_base & 0xfffff) << 16, mr);
348 }
349 }
350 }
351 }
352 s->base_addr_enable = val;
353 }
354
mv64361_update_irq(void * opaque,int n,int level)355 static void mv64361_update_irq(void *opaque, int n, int level)
356 {
357 MV64361State *s = opaque;
358 uint64_t val = s->main_int_cr;
359
360 if (level) {
361 val |= BIT_ULL(n);
362 } else {
363 val &= ~BIT_ULL(n);
364 }
365 if ((s->main_int_cr & s->cpu0_int_mask) != (val & s->cpu0_int_mask)) {
366 qemu_set_irq(s->cpu_irq, level);
367 }
368 s->main_int_cr = val;
369 }
370
mv64361_read(void * opaque,hwaddr addr,unsigned int size)371 static uint64_t mv64361_read(void *opaque, hwaddr addr, unsigned int size)
372 {
373 MV64361State *s = MV64361(opaque);
374 uint32_t ret = 0;
375
376 switch (addr) {
377 case MV64340_CPU_CONFIG:
378 ret = s->cpu_conf;
379 break;
380 case MV64340_PCI_0_IO_BASE_ADDR:
381 ret = s->pci[0].io_base;
382 break;
383 case MV64340_PCI_0_IO_SIZE:
384 ret = s->pci[0].io_size;
385 break;
386 case MV64340_PCI_0_IO_ADDR_REMAP:
387 ret = s->pci[0].remap[4] >> 16;
388 break;
389 case MV64340_PCI_0_MEMORY0_BASE_ADDR:
390 ret = s->pci[0].mem_base[0];
391 break;
392 case MV64340_PCI_0_MEMORY0_SIZE:
393 ret = s->pci[0].mem_size[0];
394 break;
395 case MV64340_PCI_0_MEMORY0_LOW_ADDR_REMAP:
396 ret = (s->pci[0].remap[0] & 0xffff0000) >> 16;
397 break;
398 case MV64340_PCI_0_MEMORY0_HIGH_ADDR_REMAP:
399 ret = s->pci[0].remap[0] >> 32;
400 break;
401 case MV64340_PCI_0_MEMORY1_BASE_ADDR:
402 ret = s->pci[0].mem_base[1];
403 break;
404 case MV64340_PCI_0_MEMORY1_SIZE:
405 ret = s->pci[0].mem_size[1];
406 break;
407 case MV64340_PCI_0_MEMORY1_LOW_ADDR_REMAP:
408 ret = (s->pci[0].remap[1] & 0xffff0000) >> 16;
409 break;
410 case MV64340_PCI_0_MEMORY1_HIGH_ADDR_REMAP:
411 ret = s->pci[0].remap[1] >> 32;
412 break;
413 case MV64340_PCI_0_MEMORY2_BASE_ADDR:
414 ret = s->pci[0].mem_base[2];
415 break;
416 case MV64340_PCI_0_MEMORY2_SIZE:
417 ret = s->pci[0].mem_size[2];
418 break;
419 case MV64340_PCI_0_MEMORY2_LOW_ADDR_REMAP:
420 ret = (s->pci[0].remap[2] & 0xffff0000) >> 16;
421 break;
422 case MV64340_PCI_0_MEMORY2_HIGH_ADDR_REMAP:
423 ret = s->pci[0].remap[2] >> 32;
424 break;
425 case MV64340_PCI_0_MEMORY3_BASE_ADDR:
426 ret = s->pci[0].mem_base[3];
427 break;
428 case MV64340_PCI_0_MEMORY3_SIZE:
429 ret = s->pci[0].mem_size[3];
430 break;
431 case MV64340_PCI_0_MEMORY3_LOW_ADDR_REMAP:
432 ret = (s->pci[0].remap[3] & 0xffff0000) >> 16;
433 break;
434 case MV64340_PCI_0_MEMORY3_HIGH_ADDR_REMAP:
435 ret = s->pci[0].remap[3] >> 32;
436 break;
437 case MV64340_PCI_1_IO_BASE_ADDR:
438 ret = s->pci[1].io_base;
439 break;
440 case MV64340_PCI_1_IO_SIZE:
441 ret = s->pci[1].io_size;
442 break;
443 case MV64340_PCI_1_IO_ADDR_REMAP:
444 ret = s->pci[1].remap[4] >> 16;
445 break;
446 case MV64340_PCI_1_MEMORY0_BASE_ADDR:
447 ret = s->pci[1].mem_base[0];
448 break;
449 case MV64340_PCI_1_MEMORY0_SIZE:
450 ret = s->pci[1].mem_size[0];
451 break;
452 case MV64340_PCI_1_MEMORY0_LOW_ADDR_REMAP:
453 ret = (s->pci[1].remap[0] & 0xffff0000) >> 16;
454 break;
455 case MV64340_PCI_1_MEMORY0_HIGH_ADDR_REMAP:
456 ret = s->pci[1].remap[0] >> 32;
457 break;
458 case MV64340_PCI_1_MEMORY1_BASE_ADDR:
459 ret = s->pci[1].mem_base[1];
460 break;
461 case MV64340_PCI_1_MEMORY1_SIZE:
462 ret = s->pci[1].mem_size[1];
463 break;
464 case MV64340_PCI_1_MEMORY1_LOW_ADDR_REMAP:
465 ret = (s->pci[1].remap[1] & 0xffff0000) >> 16;
466 break;
467 case MV64340_PCI_1_MEMORY1_HIGH_ADDR_REMAP:
468 ret = s->pci[1].remap[1] >> 32;
469 break;
470 case MV64340_PCI_1_MEMORY2_BASE_ADDR:
471 ret = s->pci[1].mem_base[2];
472 break;
473 case MV64340_PCI_1_MEMORY2_SIZE:
474 ret = s->pci[1].mem_size[2];
475 break;
476 case MV64340_PCI_1_MEMORY2_LOW_ADDR_REMAP:
477 ret = (s->pci[1].remap[2] & 0xffff0000) >> 16;
478 break;
479 case MV64340_PCI_1_MEMORY2_HIGH_ADDR_REMAP:
480 ret = s->pci[1].remap[2] >> 32;
481 break;
482 case MV64340_PCI_1_MEMORY3_BASE_ADDR:
483 ret = s->pci[1].mem_base[3];
484 break;
485 case MV64340_PCI_1_MEMORY3_SIZE:
486 ret = s->pci[1].mem_size[3];
487 break;
488 case MV64340_PCI_1_MEMORY3_LOW_ADDR_REMAP:
489 ret = (s->pci[1].remap[3] & 0xffff0000) >> 16;
490 break;
491 case MV64340_PCI_1_MEMORY3_HIGH_ADDR_REMAP:
492 ret = s->pci[1].remap[3] >> 32;
493 break;
494 case MV64340_INTERNAL_SPACE_BASE_ADDR:
495 ret = s->regs_base;
496 break;
497 case MV64340_BASE_ADDR_ENABLE:
498 ret = s->base_addr_enable;
499 break;
500 case MV64340_PCI_0_CONFIG_ADDR:
501 ret = pci_host_conf_le_ops.read(PCI_HOST_BRIDGE(&s->pci[0]), 0, size);
502 break;
503 case MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG ...
504 MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG + 3:
505 ret = pci_host_data_le_ops.read(PCI_HOST_BRIDGE(&s->pci[0]),
506 addr - MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG, size);
507 break;
508 case MV64340_PCI_1_CONFIG_ADDR:
509 ret = pci_host_conf_le_ops.read(PCI_HOST_BRIDGE(&s->pci[1]), 0, size);
510 break;
511 case MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG ...
512 MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG + 3:
513 ret = pci_host_data_le_ops.read(PCI_HOST_BRIDGE(&s->pci[1]),
514 addr - MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG, size);
515 break;
516 case MV64340_PCI_1_INTERRUPT_ACKNOWLEDGE_VIRTUAL_REG:
517 /* FIXME: Should this be sent via the PCI bus somehow? */
518 if (s->gpp_int_level && (s->gpp_value & BIT(31))) {
519 ret = pic_read_irq(isa_pic);
520 }
521 break;
522 case MV64340_MAIN_INTERRUPT_CAUSE_LOW:
523 ret = s->main_int_cr;
524 break;
525 case MV64340_MAIN_INTERRUPT_CAUSE_HIGH:
526 ret = s->main_int_cr >> 32;
527 break;
528 case MV64340_CPU_INTERRUPT0_MASK_LOW:
529 ret = s->cpu0_int_mask;
530 break;
531 case MV64340_CPU_INTERRUPT0_MASK_HIGH:
532 ret = s->cpu0_int_mask >> 32;
533 break;
534 case MV64340_CPU_INTERRUPT0_SELECT_CAUSE:
535 ret = s->main_int_cr;
536 if (s->main_int_cr & s->cpu0_int_mask) {
537 if (!(s->main_int_cr & s->cpu0_int_mask & 0xffffffff)) {
538 ret = s->main_int_cr >> 32 | BIT(30);
539 } else if ((s->main_int_cr & s->cpu0_int_mask) >> 32) {
540 ret |= BIT(31);
541 }
542 }
543 break;
544 case MV64340_ETH_PHY_ADDR:
545 ret = 0x98;
546 break;
547 case MV64340_ETH_SMI:
548 ret = BIT(27);
549 break;
550 case MV64340_CUNIT_ARBITER_CONTROL_REG:
551 ret = 0x11ff0000 | (s->gpp_int_level << 10);
552 break;
553 case MV64340_GPP_IO_CONTROL:
554 ret = s->gpp_io;
555 break;
556 case MV64340_GPP_LEVEL_CONTROL:
557 ret = s->gpp_level;
558 break;
559 case MV64340_GPP_VALUE:
560 ret = s->gpp_value;
561 break;
562 case MV64340_GPP_VALUE_SET:
563 case MV64340_GPP_VALUE_CLEAR:
564 ret = 0;
565 break;
566 case MV64340_GPP_INTERRUPT_CAUSE:
567 ret = s->gpp_int_cr;
568 break;
569 case MV64340_GPP_INTERRUPT_MASK0:
570 case MV64340_GPP_INTERRUPT_MASK1:
571 ret = s->gpp_int_mask;
572 break;
573 default:
574 qemu_log_mask(LOG_UNIMP, "%s: Unimplemented register read 0x%"
575 HWADDR_PRIx "\n", __func__, addr);
576 break;
577 }
578 if (addr != MV64340_PCI_1_INTERRUPT_ACKNOWLEDGE_VIRTUAL_REG) {
579 trace_mv64361_reg_read(addr, ret);
580 }
581 return ret;
582 }
583
warn_swap_bit(uint64_t val)584 static void warn_swap_bit(uint64_t val)
585 {
586 if ((val & 0x3000000ULL) >> 24 != 1) {
587 qemu_log_mask(LOG_UNIMP, "%s: Data swap not implemented", __func__);
588 }
589 }
590
mv64361_set_pci_mem_remap(MV64361State * s,int bus,int idx,uint64_t val,bool high)591 static void mv64361_set_pci_mem_remap(MV64361State *s, int bus, int idx,
592 uint64_t val, bool high)
593 {
594 if (high) {
595 s->pci[bus].remap[idx] = val;
596 } else {
597 s->pci[bus].remap[idx] &= 0xffffffff00000000ULL;
598 s->pci[bus].remap[idx] |= (val & 0xffffULL) << 16;
599 }
600 }
601
mv64361_write(void * opaque,hwaddr addr,uint64_t val,unsigned int size)602 static void mv64361_write(void *opaque, hwaddr addr, uint64_t val,
603 unsigned int size)
604 {
605 MV64361State *s = MV64361(opaque);
606
607 trace_mv64361_reg_write(addr, val);
608 switch (addr) {
609 case MV64340_CPU_CONFIG:
610 s->cpu_conf = val & 0xe4e3bffULL;
611 s->cpu_conf |= BIT(23);
612 break;
613 case MV64340_PCI_0_IO_BASE_ADDR:
614 s->pci[0].io_base = val & 0x30fffffULL;
615 warn_swap_bit(val);
616 if (!(s->cpu_conf & BIT(27))) {
617 s->pci[0].remap[4] = (val & 0xffffULL) << 16;
618 }
619 break;
620 case MV64340_PCI_0_IO_SIZE:
621 s->pci[0].io_size = val & 0xffffULL;
622 break;
623 case MV64340_PCI_0_IO_ADDR_REMAP:
624 s->pci[0].remap[4] = (val & 0xffffULL) << 16;
625 break;
626 case MV64340_PCI_0_MEMORY0_BASE_ADDR:
627 s->pci[0].mem_base[0] = val & 0x70fffffULL;
628 warn_swap_bit(val);
629 if (!(s->cpu_conf & BIT(27))) {
630 mv64361_set_pci_mem_remap(s, 0, 0, val, false);
631 }
632 break;
633 case MV64340_PCI_0_MEMORY0_SIZE:
634 s->pci[0].mem_size[0] = val & 0xffffULL;
635 break;
636 case MV64340_PCI_0_MEMORY0_LOW_ADDR_REMAP:
637 case MV64340_PCI_0_MEMORY0_HIGH_ADDR_REMAP:
638 mv64361_set_pci_mem_remap(s, 0, 0, val,
639 (addr == MV64340_PCI_0_MEMORY0_HIGH_ADDR_REMAP));
640 break;
641 case MV64340_PCI_0_MEMORY1_BASE_ADDR:
642 s->pci[0].mem_base[1] = val & 0x70fffffULL;
643 warn_swap_bit(val);
644 if (!(s->cpu_conf & BIT(27))) {
645 mv64361_set_pci_mem_remap(s, 0, 1, val, false);
646 }
647 break;
648 case MV64340_PCI_0_MEMORY1_SIZE:
649 s->pci[0].mem_size[1] = val & 0xffffULL;
650 break;
651 case MV64340_PCI_0_MEMORY1_LOW_ADDR_REMAP:
652 case MV64340_PCI_0_MEMORY1_HIGH_ADDR_REMAP:
653 mv64361_set_pci_mem_remap(s, 0, 1, val,
654 (addr == MV64340_PCI_0_MEMORY1_HIGH_ADDR_REMAP));
655 break;
656 case MV64340_PCI_0_MEMORY2_BASE_ADDR:
657 s->pci[0].mem_base[2] = val & 0x70fffffULL;
658 warn_swap_bit(val);
659 if (!(s->cpu_conf & BIT(27))) {
660 mv64361_set_pci_mem_remap(s, 0, 2, val, false);
661 }
662 break;
663 case MV64340_PCI_0_MEMORY2_SIZE:
664 s->pci[0].mem_size[2] = val & 0xffffULL;
665 break;
666 case MV64340_PCI_0_MEMORY2_LOW_ADDR_REMAP:
667 case MV64340_PCI_0_MEMORY2_HIGH_ADDR_REMAP:
668 mv64361_set_pci_mem_remap(s, 0, 2, val,
669 (addr == MV64340_PCI_0_MEMORY2_HIGH_ADDR_REMAP));
670 break;
671 case MV64340_PCI_0_MEMORY3_BASE_ADDR:
672 s->pci[0].mem_base[3] = val & 0x70fffffULL;
673 warn_swap_bit(val);
674 if (!(s->cpu_conf & BIT(27))) {
675 mv64361_set_pci_mem_remap(s, 0, 3, val, false);
676 }
677 break;
678 case MV64340_PCI_0_MEMORY3_SIZE:
679 s->pci[0].mem_size[3] = val & 0xffffULL;
680 break;
681 case MV64340_PCI_0_MEMORY3_LOW_ADDR_REMAP:
682 case MV64340_PCI_0_MEMORY3_HIGH_ADDR_REMAP:
683 mv64361_set_pci_mem_remap(s, 0, 3, val,
684 (addr == MV64340_PCI_0_MEMORY3_HIGH_ADDR_REMAP));
685 break;
686 case MV64340_PCI_1_IO_BASE_ADDR:
687 s->pci[1].io_base = val & 0x30fffffULL;
688 warn_swap_bit(val);
689 if (!(s->cpu_conf & BIT(27))) {
690 s->pci[1].remap[4] = (val & 0xffffULL) << 16;
691 }
692 break;
693 case MV64340_PCI_1_IO_SIZE:
694 s->pci[1].io_size = val & 0xffffULL;
695 break;
696 case MV64340_PCI_1_MEMORY0_BASE_ADDR:
697 s->pci[1].mem_base[0] = val & 0x70fffffULL;
698 warn_swap_bit(val);
699 if (!(s->cpu_conf & BIT(27))) {
700 mv64361_set_pci_mem_remap(s, 1, 0, val, false);
701 }
702 break;
703 case MV64340_PCI_1_MEMORY0_SIZE:
704 s->pci[1].mem_size[0] = val & 0xffffULL;
705 break;
706 case MV64340_PCI_1_MEMORY0_LOW_ADDR_REMAP:
707 case MV64340_PCI_1_MEMORY0_HIGH_ADDR_REMAP:
708 mv64361_set_pci_mem_remap(s, 1, 0, val,
709 (addr == MV64340_PCI_1_MEMORY0_HIGH_ADDR_REMAP));
710 break;
711 case MV64340_PCI_1_MEMORY1_BASE_ADDR:
712 s->pci[1].mem_base[1] = val & 0x70fffffULL;
713 warn_swap_bit(val);
714 if (!(s->cpu_conf & BIT(27))) {
715 mv64361_set_pci_mem_remap(s, 1, 1, val, false);
716 }
717 break;
718 case MV64340_PCI_1_MEMORY1_SIZE:
719 s->pci[1].mem_size[1] = val & 0xffffULL;
720 break;
721 case MV64340_PCI_1_MEMORY1_LOW_ADDR_REMAP:
722 case MV64340_PCI_1_MEMORY1_HIGH_ADDR_REMAP:
723 mv64361_set_pci_mem_remap(s, 1, 1, val,
724 (addr == MV64340_PCI_1_MEMORY1_HIGH_ADDR_REMAP));
725 break;
726 case MV64340_PCI_1_MEMORY2_BASE_ADDR:
727 s->pci[1].mem_base[2] = val & 0x70fffffULL;
728 warn_swap_bit(val);
729 if (!(s->cpu_conf & BIT(27))) {
730 mv64361_set_pci_mem_remap(s, 1, 2, val, false);
731 }
732 break;
733 case MV64340_PCI_1_MEMORY2_SIZE:
734 s->pci[1].mem_size[2] = val & 0xffffULL;
735 break;
736 case MV64340_PCI_1_MEMORY2_LOW_ADDR_REMAP:
737 case MV64340_PCI_1_MEMORY2_HIGH_ADDR_REMAP:
738 mv64361_set_pci_mem_remap(s, 1, 2, val,
739 (addr == MV64340_PCI_1_MEMORY2_HIGH_ADDR_REMAP));
740 break;
741 case MV64340_PCI_1_MEMORY3_BASE_ADDR:
742 s->pci[1].mem_base[3] = val & 0x70fffffULL;
743 warn_swap_bit(val);
744 if (!(s->cpu_conf & BIT(27))) {
745 mv64361_set_pci_mem_remap(s, 1, 3, val, false);
746 }
747 break;
748 case MV64340_PCI_1_MEMORY3_SIZE:
749 s->pci[1].mem_size[3] = val & 0xffffULL;
750 break;
751 case MV64340_PCI_1_MEMORY3_LOW_ADDR_REMAP:
752 case MV64340_PCI_1_MEMORY3_HIGH_ADDR_REMAP:
753 mv64361_set_pci_mem_remap(s, 1, 3, val,
754 (addr == MV64340_PCI_1_MEMORY3_HIGH_ADDR_REMAP));
755 break;
756 case MV64340_INTERNAL_SPACE_BASE_ADDR:
757 s->regs_base = val & 0xfffffULL;
758 break;
759 case MV64340_BASE_ADDR_ENABLE:
760 set_mem_windows(s, val);
761 break;
762 case MV64340_PCI_0_CONFIG_ADDR:
763 pci_host_conf_le_ops.write(PCI_HOST_BRIDGE(&s->pci[0]), 0, val, size);
764 break;
765 case MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG ...
766 MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG + 3:
767 pci_host_data_le_ops.write(PCI_HOST_BRIDGE(&s->pci[0]),
768 addr - MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG, val, size);
769 break;
770 case MV64340_PCI_1_CONFIG_ADDR:
771 pci_host_conf_le_ops.write(PCI_HOST_BRIDGE(&s->pci[1]), 0, val, size);
772 break;
773 case MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG ...
774 MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG + 3:
775 pci_host_data_le_ops.write(PCI_HOST_BRIDGE(&s->pci[1]),
776 addr - MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG, val, size);
777 break;
778 case MV64340_CPU_INTERRUPT0_MASK_LOW:
779 s->cpu0_int_mask &= 0xffffffff00000000ULL;
780 s->cpu0_int_mask |= val & 0xffffffffULL;
781 break;
782 case MV64340_CPU_INTERRUPT0_MASK_HIGH:
783 s->cpu0_int_mask &= 0xffffffffULL;
784 s->cpu0_int_mask |= val << 32;
785 break;
786 case MV64340_CUNIT_ARBITER_CONTROL_REG:
787 s->gpp_int_level = !!(val & BIT(10));
788 break;
789 case MV64340_GPP_IO_CONTROL:
790 s->gpp_io = val;
791 break;
792 case MV64340_GPP_LEVEL_CONTROL:
793 s->gpp_level = val;
794 break;
795 case MV64340_GPP_VALUE:
796 s->gpp_value &= ~s->gpp_io;
797 s->gpp_value |= val & s->gpp_io;
798 break;
799 case MV64340_GPP_VALUE_SET:
800 s->gpp_value |= val & s->gpp_io;
801 break;
802 case MV64340_GPP_VALUE_CLEAR:
803 s->gpp_value &= ~(val & s->gpp_io);
804 break;
805 case MV64340_GPP_INTERRUPT_CAUSE:
806 if (!s->gpp_int_level && val != s->gpp_int_cr) {
807 int i;
808 uint32_t ch = s->gpp_int_cr ^ val;
809 s->gpp_int_cr = val;
810 for (i = 0; i < 4; i++) {
811 if ((ch & 0xff << i) && !(val & 0xff << i)) {
812 mv64361_update_irq(opaque, MV64361_IRQ_P0_GPP0_7 + i, 0);
813 }
814 }
815 } else {
816 s->gpp_int_cr = val;
817 }
818 break;
819 case MV64340_GPP_INTERRUPT_MASK0:
820 case MV64340_GPP_INTERRUPT_MASK1:
821 s->gpp_int_mask = val;
822 break;
823 default:
824 qemu_log_mask(LOG_UNIMP, "%s: Unimplemented register write 0x%"
825 HWADDR_PRIx " = %"PRIx64"\n", __func__, addr, val);
826 break;
827 }
828 }
829
830 static const MemoryRegionOps mv64361_ops = {
831 .read = mv64361_read,
832 .write = mv64361_write,
833 .valid.min_access_size = 1,
834 .valid.max_access_size = 4,
835 .endianness = DEVICE_LITTLE_ENDIAN,
836 };
837
mv64361_gpp_irq(void * opaque,int n,int level)838 static void mv64361_gpp_irq(void *opaque, int n, int level)
839 {
840 MV64361State *s = opaque;
841 uint32_t mask = BIT(n);
842 uint32_t val = s->gpp_value & ~mask;
843
844 if (s->gpp_level & mask) {
845 level = !level;
846 }
847 val |= level << n;
848 if (val > s->gpp_value) {
849 s->gpp_value = val;
850 s->gpp_int_cr |= mask;
851 if (s->gpp_int_mask & mask) {
852 mv64361_update_irq(opaque, MV64361_IRQ_P0_GPP0_7 + n / 8, 1);
853 }
854 } else if (val < s->gpp_value) {
855 int b = n / 8;
856 s->gpp_value = val;
857 if (s->gpp_int_level && !(val & 0xff << b)) {
858 mv64361_update_irq(opaque, MV64361_IRQ_P0_GPP0_7 + b, 0);
859 }
860 }
861 }
862
mv64361_realize(DeviceState * dev,Error ** errp)863 static void mv64361_realize(DeviceState *dev, Error **errp)
864 {
865 MV64361State *s = MV64361(dev);
866 int i;
867
868 s->base_addr_enable = 0x1fffff;
869 memory_region_init_io(&s->regs, OBJECT(s), &mv64361_ops, s,
870 TYPE_MV64361, 0x10000);
871 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->regs);
872 for (i = 0; i < 2; i++) {
873 g_autofree char *name = g_strdup_printf("pcihost%d", i);
874 object_initialize_child(OBJECT(dev), name, &s->pci[i],
875 TYPE_MV64361_PCI);
876 DeviceState *pci = DEVICE(&s->pci[i]);
877 qdev_prop_set_uint8(pci, "index", i);
878 sysbus_realize_and_unref(SYS_BUS_DEVICE(pci), &error_fatal);
879 }
880 sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->cpu_irq);
881 qdev_init_gpio_in_named(dev, mv64361_gpp_irq, "gpp", 32);
882 }
883
mv64361_reset(DeviceState * dev)884 static void mv64361_reset(DeviceState *dev)
885 {
886 MV64361State *s = MV64361(dev);
887 int i, j;
888
889 /*
890 * These values may be board specific
891 * Real chip supports init from an eprom but that's not modelled
892 */
893 set_mem_windows(s, 0x1fffff);
894 s->cpu_conf = 0x28000ff;
895 s->regs_base = 0x100f100;
896 s->pci[0].io_base = 0x100f800;
897 s->pci[0].io_size = 0xff;
898 s->pci[0].mem_base[0] = 0x100c000;
899 s->pci[0].mem_size[0] = 0x1fff;
900 s->pci[0].mem_base[1] = 0x100f900;
901 s->pci[0].mem_size[1] = 0xff;
902 s->pci[0].mem_base[2] = 0x100f400;
903 s->pci[0].mem_size[2] = 0x1ff;
904 s->pci[0].mem_base[3] = 0x100f600;
905 s->pci[0].mem_size[3] = 0x1ff;
906 s->pci[1].io_base = 0x100fe00;
907 s->pci[1].io_size = 0xff;
908 s->pci[1].mem_base[0] = 0x1008000;
909 s->pci[1].mem_size[0] = 0x3fff;
910 s->pci[1].mem_base[1] = 0x100fd00;
911 s->pci[1].mem_size[1] = 0xff;
912 s->pci[1].mem_base[2] = 0x1002600;
913 s->pci[1].mem_size[2] = 0x1ff;
914 s->pci[1].mem_base[3] = 0x100ff80;
915 s->pci[1].mem_size[3] = 0x7f;
916 for (i = 0; i < 2; i++) {
917 for (j = 0; j < 4; j++) {
918 s->pci[i].remap[j] = s->pci[i].mem_base[j] << 16;
919 }
920 }
921 s->pci[0].remap[1] = 0;
922 s->pci[1].remap[1] = 0;
923 set_mem_windows(s, 0xfbfff);
924 }
925
mv64361_class_init(ObjectClass * klass,void * data)926 static void mv64361_class_init(ObjectClass *klass, void *data)
927 {
928 DeviceClass *dc = DEVICE_CLASS(klass);
929
930 dc->realize = mv64361_realize;
931 dc->reset = mv64361_reset;
932 }
933
934 static const TypeInfo mv64361_type_info = {
935 .name = TYPE_MV64361,
936 .parent = TYPE_SYS_BUS_DEVICE,
937 .instance_size = sizeof(MV64361State),
938 .class_init = mv64361_class_init,
939 };
940
mv64361_register_types(void)941 static void mv64361_register_types(void)
942 {
943 type_register_static(&mv64361_type_info);
944 }
945
946 type_init(mv64361_register_types)
947