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25#include "hw/sysbus.h"
26#include "trace.h"
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36
37
38#define ECC_MCC 0x00000000
39#define ECC_EMC 0x10000000
40#define ECC_SMC 0x20000000
41
42
43#define ECC_MER 0
44#define ECC_MDR 1
45#define ECC_MFSR 2
46#define ECC_VCR 3
47#define ECC_MFAR0 4
48#define ECC_MFAR1 5
49#define ECC_DR 6
50#define ECC_ECR0 7
51#define ECC_ECR1 8
52
53
54#define ECC_MER_EE 0x00000001
55#define ECC_MER_EI 0x00000002
56
57#define ECC_MER_MRR0 0x00000004
58#define ECC_MER_MRR1 0x00000008
59#define ECC_MER_MRR2 0x00000010
60#define ECC_MER_MRR3 0x00000020
61#define ECC_MER_MRR4 0x00000040
62#define ECC_MER_MRR5 0x00000080
63#define ECC_MER_MRR6 0x00000100
64#define ECC_MER_MRR7 0x00000200
65#define ECC_MER_REU 0x00000100
66#define ECC_MER_MRR 0x000003fc
67#define ECC_MER_A 0x00000400
68#define ECC_MER_DCI 0x00000800
69#define ECC_MER_VER 0x0f000000
70#define ECC_MER_IMPL 0xf0000000
71#define ECC_MER_MASK_0 0x00000103
72#define ECC_MER_MASK_1 0x00000bff
73#define ECC_MER_MASK_2 0x00000bff
74
75
76#define ECC_MDR_RRI 0x000003ff
77#define ECC_MDR_MI 0x00001c00
78#define ECC_MDR_CI 0x0000e000
79#define ECC_MDR_MDL 0x001f0000
80#define ECC_MDR_MDH 0x03e00000
81#define ECC_MDR_GAD 0x7c000000
82#define ECC_MDR_RSC 0x80000000
83#define ECC_MDR_MASK 0x7fffffff
84
85
86#define ECC_MFSR_CE 0x00000001
87#define ECC_MFSR_BS 0x00000002
88#define ECC_MFSR_TO 0x00000004
89#define ECC_MFSR_UE 0x00000008
90#define ECC_MFSR_DW 0x000000f0
91#define ECC_MFSR_SYND 0x0000ff00
92#define ECC_MFSR_ME 0x00010000
93#define ECC_MFSR_C2ERR 0x00020000
94
95
96#define ECC_MFAR0_PADDR 0x0000000f
97#define ECC_MFAR0_TYPE 0x000000f0
98#define ECC_MFAR0_SIZE 0x00000700
99#define ECC_MFAR0_CACHE 0x00000800
100#define ECC_MFAR0_LOCK 0x00001000
101#define ECC_MFAR0_BMODE 0x00002000
102#define ECC_MFAR0_VADDR 0x003fc000
103#define ECC_MFAR0_S 0x08000000
104#define ECC_MFARO_MID 0xf0000000
105
106
107#define ECC_DR_CBX 0x00000001
108#define ECC_DR_CB0 0x00000002
109#define ECC_DR_CB1 0x00000004
110#define ECC_DR_CB2 0x00000008
111#define ECC_DR_CB4 0x00000010
112#define ECC_DR_CB8 0x00000020
113#define ECC_DR_CB16 0x00000040
114#define ECC_DR_CB32 0x00000080
115#define ECC_DR_DMODE 0x00000c00
116
117#define ECC_NREGS 9
118#define ECC_SIZE (ECC_NREGS * sizeof(uint32_t))
119
120#define ECC_DIAG_SIZE 4
121#define ECC_DIAG_MASK (ECC_DIAG_SIZE - 1)
122
123#define TYPE_ECC_MEMCTL "eccmemctl"
124#define ECC_MEMCTL(obj) OBJECT_CHECK(ECCState, (obj), TYPE_ECC_MEMCTL)
125
126typedef struct ECCState {
127 SysBusDevice parent_obj;
128
129 MemoryRegion iomem, iomem_diag;
130 qemu_irq irq;
131 uint32_t regs[ECC_NREGS];
132 uint8_t diag[ECC_DIAG_SIZE];
133 uint32_t version;
134} ECCState;
135
136static void ecc_mem_write(void *opaque, hwaddr addr, uint64_t val,
137 unsigned size)
138{
139 ECCState *s = opaque;
140
141 switch (addr >> 2) {
142 case ECC_MER:
143 if (s->version == ECC_MCC)
144 s->regs[ECC_MER] = (val & ECC_MER_MASK_0);
145 else if (s->version == ECC_EMC)
146 s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_1);
147 else if (s->version == ECC_SMC)
148 s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_2);
149 trace_ecc_mem_writel_mer(val);
150 break;
151 case ECC_MDR:
152 s->regs[ECC_MDR] = val & ECC_MDR_MASK;
153 trace_ecc_mem_writel_mdr(val);
154 break;
155 case ECC_MFSR:
156 s->regs[ECC_MFSR] = val;
157 qemu_irq_lower(s->irq);
158 trace_ecc_mem_writel_mfsr(val);
159 break;
160 case ECC_VCR:
161 s->regs[ECC_VCR] = val;
162 trace_ecc_mem_writel_vcr(val);
163 break;
164 case ECC_DR:
165 s->regs[ECC_DR] = val;
166 trace_ecc_mem_writel_dr(val);
167 break;
168 case ECC_ECR0:
169 s->regs[ECC_ECR0] = val;
170 trace_ecc_mem_writel_ecr0(val);
171 break;
172 case ECC_ECR1:
173 s->regs[ECC_ECR0] = val;
174 trace_ecc_mem_writel_ecr1(val);
175 break;
176 }
177}
178
179static uint64_t ecc_mem_read(void *opaque, hwaddr addr,
180 unsigned size)
181{
182 ECCState *s = opaque;
183 uint32_t ret = 0;
184
185 switch (addr >> 2) {
186 case ECC_MER:
187 ret = s->regs[ECC_MER];
188 trace_ecc_mem_readl_mer(ret);
189 break;
190 case ECC_MDR:
191 ret = s->regs[ECC_MDR];
192 trace_ecc_mem_readl_mdr(ret);
193 break;
194 case ECC_MFSR:
195 ret = s->regs[ECC_MFSR];
196 trace_ecc_mem_readl_mfsr(ret);
197 break;
198 case ECC_VCR:
199 ret = s->regs[ECC_VCR];
200 trace_ecc_mem_readl_vcr(ret);
201 break;
202 case ECC_MFAR0:
203 ret = s->regs[ECC_MFAR0];
204 trace_ecc_mem_readl_mfar0(ret);
205 break;
206 case ECC_MFAR1:
207 ret = s->regs[ECC_MFAR1];
208 trace_ecc_mem_readl_mfar1(ret);
209 break;
210 case ECC_DR:
211 ret = s->regs[ECC_DR];
212 trace_ecc_mem_readl_dr(ret);
213 break;
214 case ECC_ECR0:
215 ret = s->regs[ECC_ECR0];
216 trace_ecc_mem_readl_ecr0(ret);
217 break;
218 case ECC_ECR1:
219 ret = s->regs[ECC_ECR0];
220 trace_ecc_mem_readl_ecr1(ret);
221 break;
222 }
223 return ret;
224}
225
226static const MemoryRegionOps ecc_mem_ops = {
227 .read = ecc_mem_read,
228 .write = ecc_mem_write,
229 .endianness = DEVICE_NATIVE_ENDIAN,
230 .valid = {
231 .min_access_size = 4,
232 .max_access_size = 4,
233 },
234};
235
236static void ecc_diag_mem_write(void *opaque, hwaddr addr,
237 uint64_t val, unsigned size)
238{
239 ECCState *s = opaque;
240
241 trace_ecc_diag_mem_writeb(addr, val);
242 s->diag[addr & ECC_DIAG_MASK] = val;
243}
244
245static uint64_t ecc_diag_mem_read(void *opaque, hwaddr addr,
246 unsigned size)
247{
248 ECCState *s = opaque;
249 uint32_t ret = s->diag[(int)addr];
250
251 trace_ecc_diag_mem_readb(addr, ret);
252 return ret;
253}
254
255static const MemoryRegionOps ecc_diag_mem_ops = {
256 .read = ecc_diag_mem_read,
257 .write = ecc_diag_mem_write,
258 .endianness = DEVICE_NATIVE_ENDIAN,
259 .valid = {
260 .min_access_size = 1,
261 .max_access_size = 1,
262 },
263};
264
265static const VMStateDescription vmstate_ecc = {
266 .name ="ECC",
267 .version_id = 3,
268 .minimum_version_id = 3,
269 .fields = (VMStateField[]) {
270 VMSTATE_UINT32_ARRAY(regs, ECCState, ECC_NREGS),
271 VMSTATE_BUFFER(diag, ECCState),
272 VMSTATE_UINT32(version, ECCState),
273 VMSTATE_END_OF_LIST()
274 }
275};
276
277static void ecc_reset(DeviceState *d)
278{
279 ECCState *s = ECC_MEMCTL(d);
280
281 if (s->version == ECC_MCC) {
282 s->regs[ECC_MER] &= ECC_MER_REU;
283 } else {
284 s->regs[ECC_MER] &= (ECC_MER_VER | ECC_MER_IMPL | ECC_MER_MRR |
285 ECC_MER_DCI);
286 }
287 s->regs[ECC_MDR] = 0x20;
288 s->regs[ECC_MFSR] = 0;
289 s->regs[ECC_VCR] = 0;
290 s->regs[ECC_MFAR0] = 0x07c00000;
291 s->regs[ECC_MFAR1] = 0;
292 s->regs[ECC_DR] = 0;
293 s->regs[ECC_ECR0] = 0;
294 s->regs[ECC_ECR1] = 0;
295}
296
297static int ecc_init1(SysBusDevice *dev)
298{
299 ECCState *s = ECC_MEMCTL(dev);
300
301 sysbus_init_irq(dev, &s->irq);
302 s->regs[0] = s->version;
303 memory_region_init_io(&s->iomem, OBJECT(dev), &ecc_mem_ops, s, "ecc", ECC_SIZE);
304 sysbus_init_mmio(dev, &s->iomem);
305
306 if (s->version == ECC_MCC) {
307 memory_region_init_io(&s->iomem_diag, OBJECT(dev), &ecc_diag_mem_ops, s,
308 "ecc.diag", ECC_DIAG_SIZE);
309 sysbus_init_mmio(dev, &s->iomem_diag);
310 }
311
312 return 0;
313}
314
315static Property ecc_properties[] = {
316 DEFINE_PROP_UINT32("version", ECCState, version, -1),
317 DEFINE_PROP_END_OF_LIST(),
318};
319
320static void ecc_class_init(ObjectClass *klass, void *data)
321{
322 DeviceClass *dc = DEVICE_CLASS(klass);
323 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
324
325 k->init = ecc_init1;
326 dc->reset = ecc_reset;
327 dc->vmsd = &vmstate_ecc;
328 dc->props = ecc_properties;
329}
330
331static const TypeInfo ecc_info = {
332 .name = TYPE_ECC_MEMCTL,
333 .parent = TYPE_SYS_BUS_DEVICE,
334 .instance_size = sizeof(ECCState),
335 .class_init = ecc_class_init,
336};
337
338
339static void ecc_register_types(void)
340{
341 type_register_static(&ecc_info);
342}
343
344type_init(ecc_register_types)
345