summaryrefslogtreecommitdiffstats
path: root/src/core/hle/service/dsp_dsp.cpp
blob: d4affdfbf5440805fbe0c603bd3959bc090debd4 (plain) (blame)
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
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include "common/log.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/event.h"
#include "core/hle/service/dsp_dsp.h"

////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace DSP_DSP

namespace DSP_DSP {

static u32 read_pipe_count    = 0;
static Handle semaphore_event = 0;
static Handle interrupt_event = 0;

void SignalInterrupt() {
    // TODO(bunnei): This is just a stub, it does not do anything other than signal to the emulated
    // application that a DSP interrupt occurred, without specifying which one. Since we do not
    // emulate the DSP yet (and how it works is largely unknown), this is a work around to get games
    // that check the DSP interrupt signal event to run. We should figure out the different types of
    // DSP interrupts, and trigger them at the appropriate times.

    if (interrupt_event == 0) {
        LOG_WARNING(Service_DSP, "cannot signal interrupt until DSP event has been created!");
        return;
    }
    Kernel::SignalEvent(interrupt_event);
}

/**
 * DSP_DSP::ConvertProcessAddressFromDspDram service function
 *  Inputs:
 *      1 : Address
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 *      2 : (inaddr << 1) + 0x1FF40000 (where 0x1FF00000 is the DSP RAM address)
 */
void ConvertProcessAddressFromDspDram(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    u32 addr = cmd_buff[1];

    cmd_buff[1] = 0; // No error
    cmd_buff[2] = (addr << 1) + (Memory::DSP_MEMORY_VADDR + 0x40000);

    LOG_WARNING(Service_DSP, "(STUBBED) called with address %u", addr);
}

/**
 * DSP_DSP::LoadComponent service function
 *  Inputs:
 *      1 : Size
 *      2 : Unknown (observed only half word used)
 *      3 : Unknown (observed only half word used)
 *      4 : (size << 4) | 0xA
 *      5 : Buffer address
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 *      2 : Component loaded, 0 on not loaded, 1 on loaded
 */
void LoadComponent(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    cmd_buff[1] = 0; // No error
    cmd_buff[2] = 1; // Pretend that we actually loaded the DSP firmware

    // TODO(bunnei): Implement real DSP firmware loading

    LOG_WARNING(Service_DSP, "(STUBBED) called");
}

/**
 * DSP_DSP::GetSemaphoreEventHandle service function
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 *      3 : Semaphore event handle
 */
void GetSemaphoreEventHandle(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    cmd_buff[1] = 0; // No error
    cmd_buff[3] = semaphore_event; // Event handle

    LOG_WARNING(Service_DSP, "(STUBBED) called");
}

/**
 * DSP_DSP::RegisterInterruptEvents service function
 *  Inputs:
 *      1 : Parameter 0 (purpose unknown)
 *      2 : Parameter 1 (purpose unknown)
 *      4 : Interrupt event handle
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 */
void RegisterInterruptEvents(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    interrupt_event = static_cast<Handle>(cmd_buff[4]);

    cmd_buff[1] = 0; // No error

    LOG_WARNING(Service_DSP, "(STUBBED) called");
}

/**
 * DSP_DSP::WriteReg0x10 service function
 *  Inputs:
 *      1 : Unknown (observed only half word used)
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 */
void WriteReg0x10(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    SignalInterrupt();

    cmd_buff[1] = 0; // No error

    LOG_WARNING(Service_DSP, "(STUBBED) called");
}

/**
 * DSP_DSP::ReadPipeIfPossible service function
 *  Inputs:
 *      1 : Unknown
 *      2 : Unknown
 *      3 : Size in bytes of read (observed only lower half word used)
 *      0x41 : Virtual address to read from DSP pipe to in memory
 *  Outputs:
 *      1 : Result of function, 0 on success, otherwise error code
 *      2 : Number of bytes read from pipe
 */
void ReadPipeIfPossible(Service::Interface* self) {
    u32* cmd_buff = Kernel::GetCommandBuffer();

    u32 size = cmd_buff[3] & 0xFFFF;// Lower 16 bits are size
    VAddr addr = cmd_buff[0x41];

    // Canned DSP responses that games expect. These were taken from HW by 3dmoo team.
    // TODO: Remove this hack :)
    static const std::array<u16, 16> canned_read_pipe = {
        0x000F, 0xBFFF, 0x9E8E, 0x8680, 0xA78E, 0x9430, 0x8400, 0x8540,
        0x948E, 0x8710, 0x8410, 0xA90E, 0xAA0E, 0xAACE, 0xAC4E, 0xAC58
    };

    u32 initial_size = read_pipe_count;

    for (unsigned offset = 0; offset < size; offset += sizeof(u16)) {
        if (read_pipe_count < canned_read_pipe.size()) {
            Memory::Write16(addr + offset, canned_read_pipe[read_pipe_count]);
            read_pipe_count++;
        } else {
            LOG_ERROR(Service_DSP, "canned read pipe log exceeded!");
            break;
        }
    }

    cmd_buff[1] = 0; // No error
    cmd_buff[2] = (read_pipe_count - initial_size) * sizeof(u16);

    LOG_WARNING(Service_DSP, "(STUBBED) called size=0x%08X, buffer=0x%08X", size, addr);
}

const Interface::FunctionInfo FunctionTable[] = {
    {0x00010040, nullptr,                          "RecvData"},
    {0x00020040, nullptr,                          "RecvDataIsReady"},
    {0x00030080, nullptr,                          "SendData"},
    {0x00040040, nullptr,                          "SendDataIsEmpty"},
    {0x00070040, WriteReg0x10,                     "WriteReg0x10"},
    {0x00080000, nullptr,                          "GetSemaphore"},
    {0x00090040, nullptr,                          "ClearSemaphore"},
    {0x000B0000, nullptr,                          "CheckSemaphoreRequest"},
    {0x000C0040, ConvertProcessAddressFromDspDram, "ConvertProcessAddressFromDspDram"},
    {0x000D0082, nullptr,                          "WriteProcessPipe"},
    {0x001000C0, ReadPipeIfPossible,               "ReadPipeIfPossible"},
    {0x001100C2, LoadComponent,                    "LoadComponent"},
    {0x00120000, nullptr,                          "UnloadComponent"},
    {0x00130082, nullptr,                          "FlushDataCache"},
    {0x00140082, nullptr,                          "InvalidateDCache"},
    {0x00150082, RegisterInterruptEvents,          "RegisterInterruptEvents"},
    {0x00160000, GetSemaphoreEventHandle,          "GetSemaphoreEventHandle"},
    {0x00170040, nullptr,                          "SetSemaphoreMask"},
    {0x00180040, nullptr,                          "GetPhysicalAddress"},
    {0x00190040, nullptr,                          "GetVirtualAddress"},
    {0x001A0042, nullptr,                          "SetIirFilterI2S1_cmd1"},
    {0x001B0042, nullptr,                          "SetIirFilterI2S1_cmd2"},
    {0x001C0082, nullptr,                          "SetIirFilterEQ"},
    {0x001F0000, nullptr,                          "GetHeadphoneStatus"},
    {0x00210000, nullptr,                          "GetIsDspOccupied"},
};

////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class

Interface::Interface() {
    semaphore_event = Kernel::CreateEvent(RESETTYPE_ONESHOT, "DSP_DSP::semaphore_event");
    interrupt_event = 0;
    read_pipe_count = 0;

    Register(FunctionTable, ARRAY_SIZE(FunctionTable));
}

} // namespace