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dma_pusher: Rework command_headers usage

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Uses ScratchBuffer and avoids overwriting the command_headers buffer with the prefetch_command_list
This commit is contained in:
ameerj 2022-12-07 00:45:06 -05:00
parent bdef22ff85
commit 61e4f2d931
2 changed files with 16 additions and 9 deletions
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17
src/video_core/dma_pusher.cpp
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@ -56,7 +56,7 @@ bool DmaPusher::Step() {
if (command_list.prefetch_command_list.size()) {
// Prefetched command list from nvdrv, used for things like synchronization
command_headers = std::move(command_list.prefetch_command_list);
ProcessCommands(command_list.prefetch_command_list);
dma_pushbuffer.pop();
} else {
const CommandListHeader command_list_header{
@ -82,16 +82,21 @@ bool DmaPusher::Step() {
memory_manager.ReadBlockUnsafe(dma_get, command_headers.data(),
command_list_header.size * sizeof(u32));
}
ProcessCommands(command_headers);
}
for (std::size_t index = 0; index < command_headers.size();) {
const CommandHeader& command_header = command_headers[index];
return true;
}
void DmaPusher::ProcessCommands(std::span<const CommandHeader> commands) {
for (std::size_t index = 0; index < commands.size();) {
const CommandHeader& command_header = commands[index];
if (dma_state.method_count) {
// Data word of methods command
if (dma_state.non_incrementing) {
const u32 max_write = static_cast<u32>(
std::min<std::size_t>(index + dma_state.method_count, command_headers.size()) -
index);
std::min<std::size_t>(index + dma_state.method_count, commands.size()) - index);
CallMultiMethod(&command_header.argument, max_write);
dma_state.method_count -= max_write;
dma_state.is_last_call = true;
@ -142,8 +147,6 @@ bool DmaPusher::Step() {
}
index++;
}
return true;
}
void DmaPusher::SetState(const CommandHeader& command_header) {

8
src/video_core/dma_pusher.h
View file

@ -4,11 +4,13 @@
#pragma once
#include <array>
#include <span>
#include <vector>
#include <queue>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/scratch_buffer.h"
#include "video_core/engines/engine_interface.h"
#include "video_core/engines/puller.h"
@ -136,13 +138,15 @@ private:
static constexpr u32 non_puller_methods = 0x40;
static constexpr u32 max_subchannels = 8;
bool Step();
void ProcessCommands(std::span<const CommandHeader> commands);
void SetState(const CommandHeader& command_header);
void CallMethod(u32 argument) const;
void CallMultiMethod(const u32* base_start, u32 num_methods) const;
std::vector<CommandHeader> command_headers; ///< Buffer for list of commands fetched at once
Common::ScratchBuffer<CommandHeader>
command_headers; ///< Buffer for list of commands fetched at once
std::queue<CommandList> dma_pushbuffer; ///< Queue of command lists to be processed
std::size_t dma_pushbuffer_subindex{}; ///< Index within a command list within the pushbuffer
@ -159,7 +163,7 @@ private:
DmaState dma_state{};
bool dma_increment_once{};
bool ib_enable{true}; ///< IB mode enabled
const bool ib_enable{true}; ///< IB mode enabled
std::array<Engines::EngineInterface*, max_subchannels> subchannels{};