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video_core: dma_pusher: Add support for integrity checks.

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- Log corrupted command lists, rather than crash.
This commit is contained in:
bunnei 2020-10-29 21:13:48 -07:00
parent c64545d07a
commit c6e1c46ac7
2 changed files with 27 additions and 0 deletions
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24
src/video_core/dma_pusher.cpp
View File

@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/cityhash.h"
#include "common/microprofile.h"
#include "core/core.h"
#include "core/memory.h"
@ -12,6 +13,20 @@
namespace Tegra {
void CommandList::RefreshIntegrityChecks(GPU& gpu) {
command_list_hashes.resize(command_lists.size());
for (std::size_t index = 0; index < command_lists.size(); ++index) {
const CommandListHeader command_list_header = command_lists[index];
std::vector<CommandHeader> command_headers(command_list_header.size);
gpu.MemoryManager().ReadBlockUnsafe(command_list_header.addr, command_headers.data(),
command_list_header.size * sizeof(u32));
command_list_hashes[index] =
Common::CityHash64(reinterpret_cast<char*>(command_headers.data()),
command_list_header.size * sizeof(u32));
}
}
DmaPusher::DmaPusher(Core::System& system, GPU& gpu) : gpu{gpu}, system{system} {}
DmaPusher::~DmaPusher() = default;
@ -80,6 +95,15 @@ bool DmaPusher::Step() {
command_headers.resize(command_list_header.size);
gpu.MemoryManager().ReadBlockUnsafe(dma_get, command_headers.data(),
command_list_header.size * sizeof(u32));
// Integrity check
const u64 new_hash = Common::CityHash64(reinterpret_cast<char*>(command_headers.data()),
command_list_header.size * sizeof(u32));
if (new_hash != next_hash) {
LOG_CRITICAL(HW_GPU, "CommandList at addr=0x{:X} is corrupt, skipping!", dma_get);
dma_pushbuffer.pop();
return true;
}
}
for (std::size_t index = 0; index < command_headers.size();) {
const CommandHeader& command_header = command_headers[index];

3
src/video_core/dma_pusher.h
View File

@ -91,7 +91,10 @@ struct CommandList final {
explicit CommandList(std::vector<Tegra::CommandHeader>&& prefetch_command_list)
: prefetch_command_list{std::move(prefetch_command_list)} {}
void RefreshIntegrityChecks(GPU& gpu);
std::vector<Tegra::CommandListHeader> command_lists;
std::vector<u64> command_list_hashes;
std::vector<Tegra::CommandHeader> prefetch_command_list;
};