5 files changed, 33 insertions, 14 deletions

diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index de1bd3f61..34eabac45 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -162,7 +162,8 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
 
     _assert_msg_(GSP, (g_interrupt_event != 0), "handle is not valid!");
 
-    cmd_buff[2] = g_thread_id++; // ThreadID
+    cmd_buff[1] = 0x2A07; // Value verified by 3dmoo team, purpose unknown, but needed for GSP init
+    cmd_buff[2] = g_thread_id++; // Thread ID
     cmd_buff[4] = g_shared_memory; // GSP shared memory
 
     Kernel::SignalEvent(g_interrupt_event); // TODO(bunnei): Is this correct?
@@ -172,6 +173,7 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
  * Signals that the specified interrupt type has occurred to userland code
  * @param interrupt_id ID of interrupt that is being signalled
  * @todo This should probably take a thread_id parameter and only signal this thread?
+ * @todo This probably does not belong in the GSP module, instead move to video_core
  */
 void SignalInterrupt(InterruptId interrupt_id) {
     if (0 == g_interrupt_event) {
@@ -210,6 +212,7 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         memcpy(Memory::GetPointer(command.dma_request.dest_address),
                Memory::GetPointer(command.dma_request.source_address),
                command.dma_request.size);
+        SignalInterrupt(InterruptId::DMA);
         break;
 
     // ctrulib homebrew sends all relevant command list data with this command,
@@ -218,13 +221,13 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
     case CommandId::SET_COMMAND_LIST_LAST:
     {
         auto& params = command.set_command_list_last;
+
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.address), Memory::VirtualToPhysicalAddress(params.address) >> 3);
-        WriteGPURegister(GPU_REG_INDEX(command_processor_config.size), params.size >> 3);
+        WriteGPURegister(GPU_REG_INDEX(command_processor_config.size), params.size);
 
         // TODO: Not sure if we are supposed to always write this .. seems to trigger processing though
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.trigger), 1);
 
-        SignalInterrupt(InterruptId::P3D);
         break;
     }
 
@@ -242,6 +245,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].address_end), Memory::VirtualToPhysicalAddress(params.end2) >> 3);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].size), params.end2 - params.start2);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].value), params.value2);
+
+        SignalInterrupt(InterruptId::PSC0);
         break;
     }
 
@@ -255,14 +260,9 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.flags), params.flags);
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.trigger), 1);
 
-        // TODO(bunnei): Signalling all of these interrupts here is totally wrong, but it seems to
-        // work well enough for running demos. Need to figure out how these all work and trigger
-        // them correctly.
-        SignalInterrupt(InterruptId::PSC0);
+        // TODO(bunnei): Determine if these interrupts should be signalled here.
         SignalInterrupt(InterruptId::PSC1);
         SignalInterrupt(InterruptId::PPF);
-        SignalInterrupt(InterruptId::P3D);
-        SignalInterrupt(InterruptId::DMA);
 
         // Update framebuffer information if requested
         for (int screen_id = 0; screen_id < 2; ++screen_id) {
@@ -305,6 +305,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
 /// This triggers handling of the GX command written to the command buffer in shared memory.
 static void TriggerCmdReqQueue(Service::Interface* self) {
 
+    DEBUG_LOG(GSP, "called");
+
     // Iterate through each thread's command queue...
     for (unsigned thread_id = 0; thread_id < 0x4; ++thread_id) {
         CommandBuffer* command_buffer = (CommandBuffer*)GetCommandBuffer(thread_id);
@@ -320,6 +322,9 @@ static void TriggerCmdReqQueue(Service::Interface* self) {
             command_buffer->number_commands = command_buffer->number_commands - 1;
         }
     }
+
+    u32* cmd_buff = Service::GetCommandBuffer();
+    cmd_buff[1] = 0; // No error
 }
 
 const Interface::FunctionInfo FunctionTable[] = {
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
index af5e1b39b..77557e582 100644
--- a/src/core/hw/gpu.cpp
+++ b/src/core/hw/gpu.cpp
@@ -154,8 +154,7 @@ inline void Write(u32 addr, const T data) {
         if (config.trigger & 1)
         {
             u32* buffer = (u32*)Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalAddress()));
-            u32 size = config.size << 3;
-            Pica::CommandProcessor::ProcessCommandList(buffer, size);
+            Pica::CommandProcessor::ProcessCommandList(buffer, config.size);
         }
         break;
     }
diff --git a/src/core/hw/gpu.h b/src/core/hw/gpu.h
index 3fa7b9ccf..86cd5e680 100644
--- a/src/core/hw/gpu.h
+++ b/src/core/hw/gpu.h
@@ -169,7 +169,7 @@ struct Regs {
     INSERT_PADDING_WORDS(0x331);
 
     struct {
-        // command list size
+        // command list size (in bytes)
         u32 size;
 
         INSERT_PADDING_WORDS(0x1);
diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp
index 298b04c51..431139cc2 100644
--- a/src/video_core/command_processor.cpp
+++ b/src/video_core/command_processor.cpp
@@ -8,6 +8,7 @@
 #include "pica.h"
 #include "primitive_assembly.h"
 #include "vertex_shader.h"
+#include "core/hle/service/gsp_gpu.h"
 
 #include "debug_utils/debug_utils.h"
 
@@ -40,6 +41,11 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
     DebugUtils::OnPicaRegWrite(id, registers[id]);
 
     switch(id) {
+        // Trigger IRQ
+        case PICA_REG_INDEX(trigger_irq):
+            GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::P3D);
+            return;
+
         // It seems like these trigger vertex rendering
         case PICA_REG_INDEX(trigger_draw):
         case PICA_REG_INDEX(trigger_draw_indexed):
@@ -272,8 +278,9 @@ static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
 
 void ProcessCommandList(const u32* list, u32 size) {
     u32* read_pointer = (u32*)list;
+    u32 list_length = size / sizeof(u32);
 
-    while (read_pointer < list + size) {
+    while (read_pointer < list + list_length) {
         read_pointer += ExecuteCommandBlock(read_pointer);
     }
 }
diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index e7ca38978..8bac178ca 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -45,10 +45,16 @@ struct Regs {
 #define INSERT_PADDING_WORDS_HELPER2(x, y) INSERT_PADDING_WORDS_HELPER1(x, y)
 #define INSERT_PADDING_WORDS(num_words) u32 INSERT_PADDING_WORDS_HELPER2(pad, __LINE__)[(num_words)];
 
-    INSERT_PADDING_WORDS(0x41);
+    INSERT_PADDING_WORDS(0x10);
+
+    u32 trigger_irq;
+
+    INSERT_PADDING_WORDS(0x30);
 
     BitField<0, 24, u32> viewport_size_x;
+
     INSERT_PADDING_WORDS(0x1);
+
     BitField<0, 24, u32> viewport_size_y;
 
     INSERT_PADDING_WORDS(0x9);
@@ -544,6 +550,7 @@ struct Regs {
                     map.insert({i, #name + std::string("+") + std::to_string(i-PICA_REG_INDEX(name))});       \
             } while(false)
 
+        ADD_FIELD(trigger_irq);
         ADD_FIELD(viewport_size_x);
         ADD_FIELD(viewport_size_y);
         ADD_FIELD(viewport_depth_range);
@@ -607,6 +614,7 @@ private:
 #ifndef _MSC_VER
 #define ASSERT_REG_POSITION(field_name, position) static_assert(offsetof(Regs, field_name) == position * 4, "Field "#field_name" has invalid position")
 
+ASSERT_REG_POSITION(trigger_irq, 0x10);
 ASSERT_REG_POSITION(viewport_size_x, 0x41);
 ASSERT_REG_POSITION(viewport_size_y, 0x43);
 ASSERT_REG_POSITION(viewport_depth_range, 0x4d);