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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include <cstring>
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/service/nvdrv/devices/nvhost_nvdec_common.h"
#include "core/hle/service/nvdrv/devices/nvmap.h"
#include "core/hle/service/nvdrv/syncpoint_manager.h"
#include "core/memory.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_base.h"
namespace Service::Nvidia::Devices {
namespace {
// Copies count amount of type T from the input vector into the dst vector.
// Returns the number of bytes written into dst.
template <typename T>
std::size_t SliceVectors(const std::vector<u8>& input, std::vector<T>& dst, std::size_t count,
std::size_t offset) {
if (dst.empty()) {
return 0;
}
const size_t bytes_copied = count * sizeof(T);
std::memcpy(dst.data(), input.data() + offset, bytes_copied);
return bytes_copied;
}
// Writes the data in src to an offset into the dst vector. The offset is specified in bytes
// Returns the number of bytes written into dst.
template <typename T>
std::size_t WriteVectors(std::vector<u8>& dst, const std::vector<T>& src, std::size_t offset) {
if (src.empty()) {
return 0;
}
const size_t bytes_copied = src.size() * sizeof(T);
std::memcpy(dst.data() + offset, src.data(), bytes_copied);
return bytes_copied;
}
} // Anonymous namespace
nvhost_nvdec_common::nvhost_nvdec_common(Core::System& system_, std::shared_ptr<nvmap> nvmap_dev_,
SyncpointManager& syncpoint_manager_)
: nvdevice{system_}, nvmap_dev{std::move(nvmap_dev_)}, syncpoint_manager{syncpoint_manager_} {}
nvhost_nvdec_common::~nvhost_nvdec_common() = default;
NvResult nvhost_nvdec_common::SetNVMAPfd(const std::vector<u8>& input) {
IoctlSetNvmapFD params{};
std::memcpy(¶ms, input.data(), sizeof(IoctlSetNvmapFD));
LOG_DEBUG(Service_NVDRV, "called, fd={}", params.nvmap_fd);
nvmap_fd = params.nvmap_fd;
return NvResult::Success;
}
NvResult nvhost_nvdec_common::Submit(DeviceFD fd, const std::vector<u8>& input,
std::vector<u8>& output) {
IoctlSubmit params{};
std::memcpy(¶ms, input.data(), sizeof(IoctlSubmit));
LOG_DEBUG(Service_NVDRV, "called NVDEC Submit, cmd_buffer_count={}", params.cmd_buffer_count);
// Instantiate param buffers
std::vector<CommandBuffer> command_buffers(params.cmd_buffer_count);
std::vector<Reloc> relocs(params.relocation_count);
std::vector<u32> reloc_shifts(params.relocation_count);
std::vector<SyncptIncr> syncpt_increments(params.syncpoint_count);
std::vector<u32> fence_thresholds(params.fence_count);
// Slice input into their respective buffers
std::size_t offset = sizeof(IoctlSubmit);
offset += SliceVectors(input, command_buffers, params.cmd_buffer_count, offset);
offset += SliceVectors(input, relocs, params.relocation_count, offset);
offset += SliceVectors(input, reloc_shifts, params.relocation_count, offset);
offset += SliceVectors(input, syncpt_increments, params.syncpoint_count, offset);
offset += SliceVectors(input, fence_thresholds, params.fence_count, offset);
auto& gpu = system.GPU();
if (gpu.UseNvdec()) {
for (std::size_t i = 0; i < syncpt_increments.size(); i++) {
const SyncptIncr& syncpt_incr = syncpt_increments[i];
fence_thresholds[i] =
syncpoint_manager.IncreaseSyncpoint(syncpt_incr.id, syncpt_incr.increments);
}
}
for (const auto& cmd_buffer : command_buffers) {
const auto object = nvmap_dev->GetObject(cmd_buffer.memory_id);
ASSERT_OR_EXECUTE(object, return NvResult::InvalidState;);
Tegra::ChCommandHeaderList cmdlist(cmd_buffer.word_count);
system.Memory().ReadBlock(object->addr + cmd_buffer.offset, cmdlist.data(),
cmdlist.size() * sizeof(u32));
gpu.PushCommandBuffer(fd_to_id[fd], cmdlist);
}
std::memcpy(output.data(), ¶ms, sizeof(IoctlSubmit));
// Some games expect command_buffers to be written back
offset = sizeof(IoctlSubmit);
offset += WriteVectors(output, command_buffers, offset);
offset += WriteVectors(output, relocs, offset);
offset += WriteVectors(output, reloc_shifts, offset);
offset += WriteVectors(output, syncpt_increments, offset);
offset += WriteVectors(output, fence_thresholds, offset);
return NvResult::Success;
}
NvResult nvhost_nvdec_common::GetSyncpoint(const std::vector<u8>& input, std::vector<u8>& output) {
IoctlGetSyncpoint params{};
std::memcpy(¶ms, input.data(), sizeof(IoctlGetSyncpoint));
LOG_DEBUG(Service_NVDRV, "called GetSyncpoint, id={}", params.param);
if (device_syncpoints[params.param] == 0 && system.GPU().UseNvdec()) {
device_syncpoints[params.param] = syncpoint_manager.AllocateSyncpoint();
}
params.value = device_syncpoints[params.param];
std::memcpy(output.data(), ¶ms, sizeof(IoctlGetSyncpoint));
return NvResult::Success;
}
NvResult nvhost_nvdec_common::GetWaitbase(const std::vector<u8>& input, std::vector<u8>& output) {
IoctlGetWaitbase params{};
std::memcpy(¶ms, input.data(), sizeof(IoctlGetWaitbase));
params.value = 0; // Seems to be hard coded at 0
std::memcpy(output.data(), ¶ms, sizeof(IoctlGetWaitbase));
return NvResult::Success;
}
NvResult nvhost_nvdec_common::MapBuffer(const std::vector<u8>& input, std::vector<u8>& output) {
IoctlMapBuffer params{};
std::memcpy(¶ms, input.data(), sizeof(IoctlMapBuffer));
std::vector<MapBufferEntry> cmd_buffer_handles(params.num_entries);
SliceVectors(input, cmd_buffer_handles, params.num_entries, sizeof(IoctlMapBuffer));
auto& gpu = system.GPU();
for (auto& cmd_buffer : cmd_buffer_handles) {
auto object{nvmap_dev->GetObject(cmd_buffer.map_handle)};
if (!object) {
LOG_ERROR(Service_NVDRV, "invalid cmd_buffer nvmap_handle={:X}", cmd_buffer.map_handle);
std::memcpy(output.data(), ¶ms, output.size());
return NvResult::InvalidState;
}
if (object->dma_map_addr == 0) {
// NVDEC and VIC memory is in the 32-bit address space
// MapAllocate32 will attempt to map a lower 32-bit value in the shared gpu memory space
const GPUVAddr low_addr = gpu.MemoryManager().MapAllocate32(object->addr, object->size);
object->dma_map_addr = static_cast<u32>(low_addr);
// Ensure that the dma_map_addr is indeed in the lower 32-bit address space.
ASSERT(object->dma_map_addr == low_addr);
}
if (!object->dma_map_addr) {
LOG_ERROR(Service_NVDRV, "failed to map size={}", object->size);
} else {
cmd_buffer.map_address = object->dma_map_addr;
}
}
std::memcpy(output.data(), ¶ms, sizeof(IoctlMapBuffer));
std::memcpy(output.data() + sizeof(IoctlMapBuffer), cmd_buffer_handles.data(),
cmd_buffer_handles.size() * sizeof(MapBufferEntry));
return NvResult::Success;
}
NvResult nvhost_nvdec_common::UnmapBuffer(const std::vector<u8>& input, std::vector<u8>& output) {
// This is intntionally stubbed.
// Skip unmapping buffers here, as to not break the continuity of the VP9 reference frame
// addresses, and risk invalidating data before the async GPU thread is done with it
std::memset(output.data(), 0, output.size());
LOG_DEBUG(Service_NVDRV, "(STUBBED) called");
return NvResult::Success;
}
NvResult nvhost_nvdec_common::SetSubmitTimeout(const std::vector<u8>& input,
std::vector<u8>& output) {
std::memcpy(&submit_timeout, input.data(), input.size());
LOG_WARNING(Service_NVDRV, "(STUBBED) called");
return NvResult::Success;
}
} // namespace Service::Nvidia::Devices
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