summaryrefslogtreecommitdiffstats
path: root/src/video_core/gpu.cpp
blob: f317ddc2bbf9f6f99036af8ffeb952eaebc779d6 (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
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
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <chrono>

#include "common/assert.h"
#include "common/microprofile.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/frontend/emu_window.h"
#include "core/hardware_interrupt_manager.h"
#include "core/memory.h"
#include "core/perf_stats.h"
#include "video_core/engines/fermi_2d.h"
#include "video_core/engines/kepler_compute.h"
#include "video_core/engines/kepler_memory.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/maxwell_dma.h"
#include "video_core/gpu.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_base.h"
#include "video_core/shader_notify.h"
#include "video_core/video_core.h"

namespace Tegra {

MICROPROFILE_DEFINE(GPU_wait, "GPU", "Wait for the GPU", MP_RGB(128, 128, 192));

GPU::GPU(Core::System& system_, bool is_async_, bool use_nvdec_)
    : system{system_}, memory_manager{std::make_unique<Tegra::MemoryManager>(system)},
      dma_pusher{std::make_unique<Tegra::DmaPusher>(system, *this)}, use_nvdec{use_nvdec_},
      maxwell_3d{std::make_unique<Engines::Maxwell3D>(system, *memory_manager)},
      fermi_2d{std::make_unique<Engines::Fermi2D>()},
      kepler_compute{std::make_unique<Engines::KeplerCompute>(system, *memory_manager)},
      maxwell_dma{std::make_unique<Engines::MaxwellDMA>(system, *memory_manager)},
      kepler_memory{std::make_unique<Engines::KeplerMemory>(system, *memory_manager)},
      shader_notify{std::make_unique<VideoCore::ShaderNotify>()}, is_async{is_async_},
      gpu_thread{system_, is_async_} {}

GPU::~GPU() = default;

void GPU::BindRenderer(std::unique_ptr<VideoCore::RendererBase> renderer_) {
    renderer = std::move(renderer_);
    rasterizer = renderer->ReadRasterizer();

    memory_manager->BindRasterizer(rasterizer);
    maxwell_3d->BindRasterizer(rasterizer);
    fermi_2d->BindRasterizer(rasterizer);
    kepler_compute->BindRasterizer(rasterizer);
}

Engines::Maxwell3D& GPU::Maxwell3D() {
    return *maxwell_3d;
}

const Engines::Maxwell3D& GPU::Maxwell3D() const {
    return *maxwell_3d;
}

Engines::KeplerCompute& GPU::KeplerCompute() {
    return *kepler_compute;
}

const Engines::KeplerCompute& GPU::KeplerCompute() const {
    return *kepler_compute;
}

MemoryManager& GPU::MemoryManager() {
    return *memory_manager;
}

const MemoryManager& GPU::MemoryManager() const {
    return *memory_manager;
}

DmaPusher& GPU::DmaPusher() {
    return *dma_pusher;
}

Tegra::CDmaPusher& GPU::CDmaPusher() {
    return *cdma_pusher;
}

const DmaPusher& GPU::DmaPusher() const {
    return *dma_pusher;
}

const Tegra::CDmaPusher& GPU::CDmaPusher() const {
    return *cdma_pusher;
}

void GPU::WaitFence(u32 syncpoint_id, u32 value) {
    // Synced GPU, is always in sync
    if (!is_async) {
        return;
    }
    if (syncpoint_id == UINT32_MAX) {
        // TODO: Research what this does.
        LOG_ERROR(HW_GPU, "Waiting for syncpoint -1 not implemented");
        return;
    }
    MICROPROFILE_SCOPE(GPU_wait);
    std::unique_lock lock{sync_mutex};
    sync_cv.wait(lock, [=, this] {
        if (shutting_down.load(std::memory_order_relaxed)) {
            // We're shutting down, ensure no threads continue to wait for the next syncpoint
            return true;
        }
        return syncpoints.at(syncpoint_id).load() >= value;
    });
}

void GPU::IncrementSyncPoint(const u32 syncpoint_id) {
    auto& syncpoint = syncpoints.at(syncpoint_id);
    syncpoint++;
    std::lock_guard lock{sync_mutex};
    sync_cv.notify_all();
    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
    if (!interrupt.empty()) {
        u32 value = syncpoint.load();
        auto it = interrupt.begin();
        while (it != interrupt.end()) {
            if (value >= *it) {
                TriggerCpuInterrupt(syncpoint_id, *it);
                it = interrupt.erase(it);
                continue;
            }
            it++;
        }
    }
}

u32 GPU::GetSyncpointValue(const u32 syncpoint_id) const {
    return syncpoints.at(syncpoint_id).load();
}

void GPU::RegisterSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
    bool contains = std::any_of(interrupt.begin(), interrupt.end(),
                                [value](u32 in_value) { return in_value == value; });
    if (contains) {
        return;
    }
    interrupt.emplace_back(value);
}

bool GPU::CancelSyncptInterrupt(const u32 syncpoint_id, const u32 value) {
    std::lock_guard lock{sync_mutex};
    auto& interrupt = syncpt_interrupts.at(syncpoint_id);
    const auto iter =
        std::find_if(interrupt.begin(), interrupt.end(),
                     [value](u32 interrupt_value) { return value == interrupt_value; });

    if (iter == interrupt.end()) {
        return false;
    }
    interrupt.erase(iter);
    return true;
}

u64 GPU::RequestFlush(VAddr addr, std::size_t size) {
    std::unique_lock lck{flush_request_mutex};
    const u64 fence = ++last_flush_fence;
    flush_requests.emplace_back(fence, addr, size);
    return fence;
}

void GPU::TickWork() {
    std::unique_lock lck{flush_request_mutex};
    while (!flush_requests.empty()) {
        auto& request = flush_requests.front();
        const u64 fence = request.fence;
        const VAddr addr = request.addr;
        const std::size_t size = request.size;
        flush_requests.pop_front();
        flush_request_mutex.unlock();
        rasterizer->FlushRegion(addr, size);
        current_flush_fence.store(fence);
        flush_request_mutex.lock();
    }
}

u64 GPU::GetTicks() const {
    // This values were reversed engineered by fincs from NVN
    // The gpu clock is reported in units of 385/625 nanoseconds
    constexpr u64 gpu_ticks_num = 384;
    constexpr u64 gpu_ticks_den = 625;

    u64 nanoseconds = system.CoreTiming().GetGlobalTimeNs().count();
    if (Settings::values.use_fast_gpu_time.GetValue()) {
        nanoseconds /= 256;
    }
    const u64 nanoseconds_num = nanoseconds / gpu_ticks_den;
    const u64 nanoseconds_rem = nanoseconds % gpu_ticks_den;
    return nanoseconds_num * gpu_ticks_num + (nanoseconds_rem * gpu_ticks_num) / gpu_ticks_den;
}

void GPU::RendererFrameEndNotify() {
    system.GetPerfStats().EndGameFrame();
}

void GPU::FlushCommands() {
    rasterizer->FlushCommands();
}

void GPU::SyncGuestHost() {
    rasterizer->SyncGuestHost();
}

enum class GpuSemaphoreOperation {
    AcquireEqual = 0x1,
    WriteLong = 0x2,
    AcquireGequal = 0x4,
    AcquireMask = 0x8,
};

void GPU::CallMethod(const MethodCall& method_call) {
    LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method_call.method,
              method_call.subchannel);

    ASSERT(method_call.subchannel < bound_engines.size());

    if (ExecuteMethodOnEngine(method_call.method)) {
        CallEngineMethod(method_call);
    } else {
        CallPullerMethod(method_call);
    }
}

void GPU::CallMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
                          u32 methods_pending) {
    LOG_TRACE(HW_GPU, "Processing method {:08X} on subchannel {}", method, subchannel);

    ASSERT(subchannel < bound_engines.size());

    if (ExecuteMethodOnEngine(method)) {
        CallEngineMultiMethod(method, subchannel, base_start, amount, methods_pending);
    } else {
        for (std::size_t i = 0; i < amount; i++) {
            CallPullerMethod(MethodCall{
                method,
                base_start[i],
                subchannel,
                methods_pending - static_cast<u32>(i),
            });
        }
    }
}

bool GPU::ExecuteMethodOnEngine(u32 method) {
    const auto buffer_method = static_cast<BufferMethods>(method);
    return buffer_method >= BufferMethods::NonPullerMethods;
}

void GPU::CallPullerMethod(const MethodCall& method_call) {
    regs.reg_array[method_call.method] = method_call.argument;
    const auto method = static_cast<BufferMethods>(method_call.method);

    switch (method) {
    case BufferMethods::BindObject: {
        ProcessBindMethod(method_call);
        break;
    }
    case BufferMethods::Nop:
    case BufferMethods::SemaphoreAddressHigh:
    case BufferMethods::SemaphoreAddressLow:
    case BufferMethods::SemaphoreSequence:
    case BufferMethods::UnkCacheFlush:
    case BufferMethods::WrcacheFlush:
    case BufferMethods::FenceValue:
        break;
    case BufferMethods::RefCnt:
        rasterizer->SignalReference();
        break;
    case BufferMethods::FenceAction:
        ProcessFenceActionMethod();
        break;
    case BufferMethods::WaitForInterrupt:
        ProcessWaitForInterruptMethod();
        break;
    case BufferMethods::SemaphoreTrigger: {
        ProcessSemaphoreTriggerMethod();
        break;
    }
    case BufferMethods::NotifyIntr: {
        // TODO(Kmather73): Research and implement this method.
        LOG_ERROR(HW_GPU, "Special puller engine method NotifyIntr not implemented");
        break;
    }
    case BufferMethods::Unk28: {
        // TODO(Kmather73): Research and implement this method.
        LOG_ERROR(HW_GPU, "Special puller engine method Unk28 not implemented");
        break;
    }
    case BufferMethods::SemaphoreAcquire: {
        ProcessSemaphoreAcquire();
        break;
    }
    case BufferMethods::SemaphoreRelease: {
        ProcessSemaphoreRelease();
        break;
    }
    case BufferMethods::Yield: {
        // TODO(Kmather73): Research and implement this method.
        LOG_ERROR(HW_GPU, "Special puller engine method Yield not implemented");
        break;
    }
    default:
        LOG_ERROR(HW_GPU, "Special puller engine method {:X} not implemented", method);
        break;
    }
}

void GPU::CallEngineMethod(const MethodCall& method_call) {
    const EngineID engine = bound_engines[method_call.subchannel];

    switch (engine) {
    case EngineID::FERMI_TWOD_A:
        fermi_2d->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
        break;
    case EngineID::MAXWELL_B:
        maxwell_3d->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
        break;
    case EngineID::KEPLER_COMPUTE_B:
        kepler_compute->CallMethod(method_call.method, method_call.argument,
                                   method_call.IsLastCall());
        break;
    case EngineID::MAXWELL_DMA_COPY_A:
        maxwell_dma->CallMethod(method_call.method, method_call.argument, method_call.IsLastCall());
        break;
    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
        kepler_memory->CallMethod(method_call.method, method_call.argument,
                                  method_call.IsLastCall());
        break;
    default:
        UNIMPLEMENTED_MSG("Unimplemented engine");
    }
}

void GPU::CallEngineMultiMethod(u32 method, u32 subchannel, const u32* base_start, u32 amount,
                                u32 methods_pending) {
    const EngineID engine = bound_engines[subchannel];

    switch (engine) {
    case EngineID::FERMI_TWOD_A:
        fermi_2d->CallMultiMethod(method, base_start, amount, methods_pending);
        break;
    case EngineID::MAXWELL_B:
        maxwell_3d->CallMultiMethod(method, base_start, amount, methods_pending);
        break;
    case EngineID::KEPLER_COMPUTE_B:
        kepler_compute->CallMultiMethod(method, base_start, amount, methods_pending);
        break;
    case EngineID::MAXWELL_DMA_COPY_A:
        maxwell_dma->CallMultiMethod(method, base_start, amount, methods_pending);
        break;
    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
        kepler_memory->CallMultiMethod(method, base_start, amount, methods_pending);
        break;
    default:
        UNIMPLEMENTED_MSG("Unimplemented engine");
    }
}

void GPU::ProcessBindMethod(const MethodCall& method_call) {
    // Bind the current subchannel to the desired engine id.
    LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", method_call.subchannel,
              method_call.argument);
    const auto engine_id = static_cast<EngineID>(method_call.argument);
    bound_engines[method_call.subchannel] = static_cast<EngineID>(engine_id);
    switch (engine_id) {
    case EngineID::FERMI_TWOD_A:
        dma_pusher->BindSubchannel(fermi_2d.get(), method_call.subchannel);
        break;
    case EngineID::MAXWELL_B:
        dma_pusher->BindSubchannel(maxwell_3d.get(), method_call.subchannel);
        break;
    case EngineID::KEPLER_COMPUTE_B:
        dma_pusher->BindSubchannel(kepler_compute.get(), method_call.subchannel);
        break;
    case EngineID::MAXWELL_DMA_COPY_A:
        dma_pusher->BindSubchannel(maxwell_dma.get(), method_call.subchannel);
        break;
    case EngineID::KEPLER_INLINE_TO_MEMORY_B:
        dma_pusher->BindSubchannel(kepler_memory.get(), method_call.subchannel);
        break;
    default:
        UNIMPLEMENTED_MSG("Unimplemented engine {:04X}", engine_id);
    }
}

void GPU::ProcessFenceActionMethod() {
    switch (regs.fence_action.op) {
    case FenceOperation::Acquire:
        WaitFence(regs.fence_action.syncpoint_id, regs.fence_value);
        break;
    case FenceOperation::Increment:
        IncrementSyncPoint(regs.fence_action.syncpoint_id);
        break;
    default:
        UNIMPLEMENTED_MSG("Unimplemented operation {}", regs.fence_action.op.Value());
    }
}

void GPU::ProcessWaitForInterruptMethod() {
    // TODO(bunnei) ImplementMe
    LOG_WARNING(HW_GPU, "(STUBBED) called");
}

void GPU::ProcessSemaphoreTriggerMethod() {
    const auto semaphoreOperationMask = 0xF;
    const auto op =
        static_cast<GpuSemaphoreOperation>(regs.semaphore_trigger & semaphoreOperationMask);
    if (op == GpuSemaphoreOperation::WriteLong) {
        struct Block {
            u32 sequence;
            u32 zeros = 0;
            u64 timestamp;
        };

        Block block{};
        block.sequence = regs.semaphore_sequence;
        // TODO(Kmather73): Generate a real GPU timestamp and write it here instead of
        // CoreTiming
        block.timestamp = GetTicks();
        memory_manager->WriteBlock(regs.semaphore_address.SemaphoreAddress(), &block,
                                   sizeof(block));
    } else {
        const u32 word{memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress())};
        if ((op == GpuSemaphoreOperation::AcquireEqual && word == regs.semaphore_sequence) ||
            (op == GpuSemaphoreOperation::AcquireGequal &&
             static_cast<s32>(word - regs.semaphore_sequence) > 0) ||
            (op == GpuSemaphoreOperation::AcquireMask && (word & regs.semaphore_sequence))) {
            // Nothing to do in this case
        } else {
            regs.acquire_source = true;
            regs.acquire_value = regs.semaphore_sequence;
            if (op == GpuSemaphoreOperation::AcquireEqual) {
                regs.acquire_active = true;
                regs.acquire_mode = false;
            } else if (op == GpuSemaphoreOperation::AcquireGequal) {
                regs.acquire_active = true;
                regs.acquire_mode = true;
            } else if (op == GpuSemaphoreOperation::AcquireMask) {
                // TODO(kemathe) The acquire mask operation waits for a value that, ANDed with
                // semaphore_sequence, gives a non-0 result
                LOG_ERROR(HW_GPU, "Invalid semaphore operation AcquireMask not implemented");
            } else {
                LOG_ERROR(HW_GPU, "Invalid semaphore operation");
            }
        }
    }
}

void GPU::ProcessSemaphoreRelease() {
    memory_manager->Write<u32>(regs.semaphore_address.SemaphoreAddress(), regs.semaphore_release);
}

void GPU::ProcessSemaphoreAcquire() {
    const u32 word = memory_manager->Read<u32>(regs.semaphore_address.SemaphoreAddress());
    const auto value = regs.semaphore_acquire;
    if (word != value) {
        regs.acquire_active = true;
        regs.acquire_value = value;
        // TODO(kemathe73) figure out how to do the acquire_timeout
        regs.acquire_mode = false;
        regs.acquire_source = false;
    }
}

void GPU::Start() {
    gpu_thread.StartThread(*renderer, renderer->Context(), *dma_pusher);
    cpu_context = renderer->GetRenderWindow().CreateSharedContext();
    cpu_context->MakeCurrent();
}

void GPU::ObtainContext() {
    cpu_context->MakeCurrent();
}

void GPU::ReleaseContext() {
    cpu_context->DoneCurrent();
}

void GPU::PushGPUEntries(Tegra::CommandList&& entries) {
    gpu_thread.SubmitList(std::move(entries));
}

void GPU::PushCommandBuffer(Tegra::ChCommandHeaderList& entries) {
    if (!use_nvdec) {
        return;
    }

    if (!cdma_pusher) {
        cdma_pusher = std::make_unique<Tegra::CDmaPusher>(*this);
    }

    // SubmitCommandBuffer would make the nvdec operations async, this is not currently working
    // TODO(ameerj): RE proper async nvdec operation
    // gpu_thread.SubmitCommandBuffer(std::move(entries));

    cdma_pusher->ProcessEntries(std::move(entries));
}

void GPU::ClearCdmaInstance() {
    cdma_pusher.reset();
}

void GPU::SwapBuffers(const Tegra::FramebufferConfig* framebuffer) {
    gpu_thread.SwapBuffers(framebuffer);
}

void GPU::FlushRegion(VAddr addr, u64 size) {
    gpu_thread.FlushRegion(addr, size);
}

void GPU::InvalidateRegion(VAddr addr, u64 size) {
    gpu_thread.InvalidateRegion(addr, size);
}

void GPU::FlushAndInvalidateRegion(VAddr addr, u64 size) {
    gpu_thread.FlushAndInvalidateRegion(addr, size);
}

void GPU::TriggerCpuInterrupt(const u32 syncpoint_id, const u32 value) const {
    auto& interrupt_manager = system.InterruptManager();
    interrupt_manager.GPUInterruptSyncpt(syncpoint_id, value);
}

void GPU::ShutDown() {
    // Signal that threads should no longer block on syncpoint fences
    shutting_down.store(true, std::memory_order_relaxed);
    sync_cv.notify_all();

    gpu_thread.ShutDown();
}

void GPU::OnCommandListEnd() {
    if (is_async) {
        // This command only applies to asynchronous GPU mode
        gpu_thread.OnCommandListEnd();
    }
}

} // namespace Tegra