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video_core/GPU Implemented the GPU PFIFO puller semaphore operations. (#1908) 

* Implemented the puller semaphore operations.

* Nit: Fix 2 style issues

* Nit: Add Break to default case.

* Fix style.

* Update for comments. Added ReferenceCount method

* Forgot to remove GpuSmaphoreAddress union.

* Fix the clang-format issues.

* More clang formatting.

* two more white spaces for the Clang formatting.

* Move puller members into the regs union

* Updated to use Memory::WriteBlock instead of Memory::Write*

* Fix clang style issues

* White space clang error

* Removing unused funcitons and other pr comment

* Removing unused funcitons and other pr comment

* More union magic for setting regs value.

* union magic refcnt as well

*  Remove local var

* Set up the regs and regs_assert_positions up properly

* Fix clang error
This commit is contained in:
Kevin 2019-01-29 18:49:18 -08:00 committed by bunnei
parent 2561a79c39
commit ba38d91fe2
2 changed files with 242 additions and 12 deletions
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183
src/video_core/gpu.cpp
View File

@ -3,6 +3,8 @@
// Refer to the license.txt file included.
#include "common/assert.h"
#include "core/core_timing.h"
#include "core/memory.h"
#include "video_core/engines/fermi_2d.h"
#include "video_core/engines/kepler_memory.h"
#include "video_core/engines/maxwell_3d.h"
@ -124,9 +126,36 @@ u32 DepthFormatBytesPerPixel(DepthFormat format) {
}
}
// Note that, traditionally, methods are treated as 4-byte addressable locations, and hence
// their numbers are written down multiplied by 4 in Docs. Here we are not multiply by 4.
// So the values you see in docs might be multiplied by 4.
enum class BufferMethods {
BindObject = 0,
CountBufferMethods = 0x40,
BindObject = 0x0,
Nop = 0x2,
SemaphoreAddressHigh = 0x4,
SemaphoreAddressLow = 0x5,
SemaphoreSequence = 0x6,
SemaphoreTrigger = 0x7,
NotifyIntr = 0x8,
WrcacheFlush = 0x9,
Unk28 = 0xA,
Unk2c = 0xB,
RefCnt = 0x14,
SemaphoreAcquire = 0x1A,
SemaphoreRelease = 0x1B,
Unk70 = 0x1C,
Unk74 = 0x1D,
Unk78 = 0x1E,
Unk7c = 0x1F,
Yield = 0x20,
NonPullerMethods = 0x40,
};
enum class GpuSemaphoreOperation {
AcquireEqual = 0x1,
WriteLong = 0x2,
AcquireGequal = 0x4,
AcquireMask = 0x8,
};
void GPU::CallMethod(const MethodCall& method_call) {
@ -135,20 +164,78 @@ void GPU::CallMethod(const MethodCall& method_call) {
ASSERT(method_call.subchannel < bound_engines.size());
if (method_call.method == static_cast<u32>(BufferMethods::BindObject)) {
// Bind the current subchannel to the desired engine id.
LOG_DEBUG(HW_GPU, "Binding subchannel {} to engine {}", method_call.subchannel,
method_call.argument);
bound_engines[method_call.subchannel] = static_cast<EngineID>(method_call.argument);
return;
if (ExecuteMethodOnEngine(method_call)) {
CallEngineMethod(method_call);
} else {
CallPullerMethod(method_call);
}
}
if (method_call.method < static_cast<u32>(BufferMethods::CountBufferMethods)) {
// TODO(Subv): Research and implement these methods.
LOG_ERROR(HW_GPU, "Special buffer methods other than Bind are not implemented");
return;
bool GPU::ExecuteMethodOnEngine(const MethodCall& method_call) {
const auto method = static_cast<BufferMethods>(method_call.method);
return 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::RefCnt:
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::WrcacheFlush: {
// TODO(Kmather73): Research and implement this method.
LOG_ERROR(HW_GPU, "Special puller engine method WrcacheFlush 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::Unk2c: {
// TODO(Kmather73): Research and implement this method.
LOG_ERROR(HW_GPU, "Special puller engine method Unk2c 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",
static_cast<u32>(method));
break;
}
}
void GPU::CallEngineMethod(const MethodCall& method_call) {
const EngineID engine = bound_engines[method_call.subchannel];
switch (engine) {
@ -172,4 +259,76 @@ void GPU::CallMethod(const MethodCall& method_call) {
}
}
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);
bound_engines[method_call.subchannel] = static_cast<EngineID>(method_call.argument);
}
void GPU::ProcessSemaphoreTriggerMethod() {
const auto semaphoreOperationMask = 0xF;
const auto op =
static_cast<GpuSemaphoreOperation>(regs.semaphore_trigger & semaphoreOperationMask);
if (op == GpuSemaphoreOperation::WriteLong) {
auto address = memory_manager->GpuToCpuAddress(regs.smaphore_address.SmaphoreAddress());
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 = CoreTiming::GetTicks();
Memory::WriteBlock(*address, &block, sizeof(block));
} else {
const auto address =
memory_manager->GpuToCpuAddress(regs.smaphore_address.SmaphoreAddress());
const u32 word = Memory::Read32(*address);
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() {
const auto address = memory_manager->GpuToCpuAddress(regs.smaphore_address.SmaphoreAddress());
Memory::Write32(*address, regs.semaphore_release);
}
void GPU::ProcessSemaphoreAcquire() {
const auto address = memory_manager->GpuToCpuAddress(regs.smaphore_address.SmaphoreAddress());
const u32 word = Memory::Read32(*address);
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;
}
}
} // namespace Tegra

71
src/video_core/gpu.h
View File

@ -156,6 +156,46 @@ public:
/// Returns a const reference to the GPU DMA pusher.
const Tegra::DmaPusher& DmaPusher() const;
struct Regs {
static constexpr size_t NUM_REGS = 0x100;
union {
struct {
INSERT_PADDING_WORDS(0x4);
struct {
u32 address_high;
u32 address_low;
GPUVAddr SmaphoreAddress() const {
return static_cast<GPUVAddr>((static_cast<GPUVAddr>(address_high) << 32) |
address_low);
}
} smaphore_address;
u32 semaphore_sequence;
u32 semaphore_trigger;
INSERT_PADDING_WORDS(0xC);
// The puser and the puller share the reference counter, the pusher only has read
// access
u32 reference_count;
INSERT_PADDING_WORDS(0x5);
u32 semaphore_acquire;
u32 semaphore_release;
INSERT_PADDING_WORDS(0xE4);
// Puller state
u32 acquire_mode;
u32 acquire_source;
u32 acquire_active;
u32 acquire_timeout;
u32 acquire_value;
};
std::array<u32, NUM_REGS> reg_array;
};
} regs{};
private:
std::unique_ptr<Tegra::DmaPusher> dma_pusher;
std::unique_ptr<Tegra::MemoryManager> memory_manager;
@ -173,6 +213,37 @@ private:
std::unique_ptr<Engines::MaxwellDMA> maxwell_dma;
/// Inline memory engine
std::unique_ptr<Engines::KeplerMemory> kepler_memory;
void ProcessBindMethod(const MethodCall& method_call);
void ProcessSemaphoreTriggerMethod();
void ProcessSemaphoreRelease();
void ProcessSemaphoreAcquire();
// Calls a GPU puller method.
void CallPullerMethod(const MethodCall& method_call);
// Calls a GPU engine method.
void CallEngineMethod(const MethodCall& method_call);
// Determines where the method should be executed.
bool ExecuteMethodOnEngine(const MethodCall& method_call);
};
#define ASSERT_REG_POSITION(field_name, position) \
static_assert(offsetof(GPU::Regs, field_name) == position * 4, \
"Field " #field_name " has invalid position")
ASSERT_REG_POSITION(smaphore_address, 0x4);
ASSERT_REG_POSITION(semaphore_sequence, 0x6);
ASSERT_REG_POSITION(semaphore_trigger, 0x7);
ASSERT_REG_POSITION(reference_count, 0x14);
ASSERT_REG_POSITION(semaphore_acquire, 0x1A);
ASSERT_REG_POSITION(semaphore_release, 0x1B);
ASSERT_REG_POSITION(acquire_mode, 0x100);
ASSERT_REG_POSITION(acquire_source, 0x101);
ASSERT_REG_POSITION(acquire_active, 0x102);
ASSERT_REG_POSITION(acquire_timeout, 0x103);
ASSERT_REG_POSITION(acquire_value, 0x104);
#undef ASSERT_REG_POSITION
} // namespace Tegra