1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
|
using ChocolArm64.Memory;
using Ryujinx.Graphics.Gal;
using System;
namespace Ryujinx.Graphics.Memory
{
public class NvGpuVmm : IMemory, IGalMemory
{
public const long AddrSize = 1L << 40;
private const int PTLvl0Bits = 14;
private const int PTLvl1Bits = 14;
private const int PTPageBits = 12;
private const int PTLvl0Size = 1 << PTLvl0Bits;
private const int PTLvl1Size = 1 << PTLvl1Bits;
public const int PageSize = 1 << PTPageBits;
private const int PTLvl0Mask = PTLvl0Size - 1;
private const int PTLvl1Mask = PTLvl1Size - 1;
public const int PageMask = PageSize - 1;
private const int PTLvl0Bit = PTPageBits + PTLvl1Bits;
private const int PTLvl1Bit = PTPageBits;
public MemoryManager Memory { get; private set; }
private NvGpuVmmCache Cache;
private const long PteUnmapped = -1;
private const long PteReserved = -2;
private long[][] PageTable;
public NvGpuVmm(MemoryManager Memory)
{
this.Memory = Memory;
Cache = new NvGpuVmmCache();
PageTable = new long[PTLvl0Size][];
}
public long Map(long PA, long VA, long Size)
{
lock (PageTable)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
SetPte(VA + Offset, PA + Offset);
}
}
return VA;
}
public long Map(long PA, long Size)
{
lock (PageTable)
{
long VA = GetFreePosition(Size);
if (VA != -1)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
SetPte(VA + Offset, PA + Offset);
}
}
return VA;
}
}
public long ReserveFixed(long VA, long Size)
{
lock (PageTable)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
if (IsPageInUse(VA + Offset))
{
return -1;
}
}
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
SetPte(VA + Offset, PteReserved);
}
}
return VA;
}
public long Reserve(long Size, long Align)
{
lock (PageTable)
{
long Position = GetFreePosition(Size, Align);
if (Position != -1)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
SetPte(Position + Offset, PteReserved);
}
}
return Position;
}
}
public void Free(long VA, long Size)
{
lock (PageTable)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
SetPte(VA + Offset, PteUnmapped);
}
}
}
private long GetFreePosition(long Size, long Align = 1)
{
//Note: Address 0 is not considered valid by the driver,
//when 0 is returned it's considered a mapping error.
long Position = PageSize;
long FreeSize = 0;
if (Align < 1)
{
Align = 1;
}
Align = (Align + PageMask) & ~PageMask;
while (Position + FreeSize < AddrSize)
{
if (!IsPageInUse(Position + FreeSize))
{
FreeSize += PageSize;
if (FreeSize >= Size)
{
return Position;
}
}
else
{
Position += FreeSize + PageSize;
FreeSize = 0;
long Remainder = Position % Align;
if (Remainder != 0)
{
Position = (Position - Remainder) + Align;
}
}
}
return -1;
}
public long GetPhysicalAddress(long VA)
{
long BasePos = GetPte(VA);
if (BasePos < 0)
{
return -1;
}
return BasePos + (VA & PageMask);
}
public bool IsRegionFree(long VA, long Size)
{
for (long Offset = 0; Offset < Size; Offset += PageSize)
{
if (IsPageInUse(VA + Offset))
{
return false;
}
}
return true;
}
private bool IsPageInUse(long VA)
{
if (VA >> PTLvl0Bits + PTLvl1Bits + PTPageBits != 0)
{
return false;
}
long L0 = (VA >> PTLvl0Bit) & PTLvl0Mask;
long L1 = (VA >> PTLvl1Bit) & PTLvl1Mask;
if (PageTable[L0] == null)
{
return false;
}
return PageTable[L0][L1] != PteUnmapped;
}
private long GetPte(long Position)
{
long L0 = (Position >> PTLvl0Bit) & PTLvl0Mask;
long L1 = (Position >> PTLvl1Bit) & PTLvl1Mask;
if (PageTable[L0] == null)
{
return -1;
}
return PageTable[L0][L1];
}
private void SetPte(long Position, long TgtAddr)
{
long L0 = (Position >> PTLvl0Bit) & PTLvl0Mask;
long L1 = (Position >> PTLvl1Bit) & PTLvl1Mask;
if (PageTable[L0] == null)
{
PageTable[L0] = new long[PTLvl1Size];
for (int Index = 0; Index < PTLvl1Size; Index++)
{
PageTable[L0][Index] = PteUnmapped;
}
}
PageTable[L0][L1] = TgtAddr;
}
public bool IsRegionModified(long PA, long Size, NvGpuBufferType BufferType)
{
return Cache.IsRegionModified(Memory, BufferType, PA, Size);
}
public IntPtr GetHostAddress(long Position, long Size)
{
return Memory.GetHostAddress(GetPhysicalAddress(Position), Size);
}
public byte ReadByte(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadByte(Position);
}
public ushort ReadUInt16(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadUInt16(Position);
}
public uint ReadUInt32(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadUInt32(Position);
}
public ulong ReadUInt64(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadUInt64(Position);
}
public sbyte ReadSByte(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadSByte(Position);
}
public short ReadInt16(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadInt16(Position);
}
public int ReadInt32(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadInt32(Position);
}
public long ReadInt64(long Position)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadInt64(Position);
}
public byte[] ReadBytes(long Position, long Size)
{
Position = GetPhysicalAddress(Position);
return Memory.ReadBytes(Position, Size);
}
public void WriteByte(long Position, byte Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteByte(Position, Value);
}
public void WriteUInt16(long Position, ushort Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteUInt16(Position, Value);
}
public void WriteUInt32(long Position, uint Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteUInt32(Position, Value);
}
public void WriteUInt64(long Position, ulong Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteUInt64(Position, Value);
}
public void WriteSByte(long Position, sbyte Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteSByte(Position, Value);
}
public void WriteInt16(long Position, short Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteInt16(Position, Value);
}
public void WriteInt32(long Position, int Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteInt32(Position, Value);
}
public void WriteInt64(long Position, long Value)
{
Position = GetPhysicalAddress(Position);
Memory.WriteInt64(Position, Value);
}
public void WriteBytes(long Position, byte[] Data)
{
Position = GetPhysicalAddress(Position);
Memory.WriteBytes(Position, Data);
}
}
}
|
