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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/core/container.h"
#include "core/hle/service/nvdrv/core/nvmap.h"
#include "core/hle/service/nvdrv/core/syncpoint_manager.h"
#include "core/hle/service/nvdrv/devices/nvhost_nvdec_common.h"
#include "core/memory.h"
#include "video_core/host1x/host1x.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(std::span<const 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);
if (input.size() < offset + bytes_copied) {
return 0;
}
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::span<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);
if (dst.size() < offset + bytes_copied) {
return 0;
}
std::memcpy(dst.data() + offset, src.data(), bytes_copied);
return bytes_copied;
}
} // Anonymous namespace
nvhost_nvdec_common::nvhost_nvdec_common(Core::System& system_, NvCore::Container& core_,
NvCore::ChannelType channel_type_)
: nvdevice{system_}, core{core_}, syncpoint_manager{core.GetSyncpointManager()},
nvmap{core.GetNvMapFile()}, channel_type{channel_type_} {
auto& syncpts_accumulated = core.Host1xDeviceFile().syncpts_accumulated;
if (syncpts_accumulated.empty()) {
channel_syncpoint = syncpoint_manager.AllocateSyncpoint(false);
} else {
channel_syncpoint = syncpts_accumulated.front();
syncpts_accumulated.pop_front();
}
}
nvhost_nvdec_common::~nvhost_nvdec_common() {
core.Host1xDeviceFile().syncpts_accumulated.push_back(channel_syncpoint);
}
NvResult nvhost_nvdec_common::SetNVMAPfd(IoctlSetNvmapFD& params) {
LOG_DEBUG(Service_NVDRV, "called, fd={}", params.nvmap_fd);
nvmap_fd = params.nvmap_fd;
return NvResult::Success;
}
NvResult nvhost_nvdec_common::Submit(IoctlSubmit& params, std::span<u8> data, DeviceFD fd) {
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 = 0;
offset += SliceVectors(data, command_buffers, params.cmd_buffer_count, offset);
offset += SliceVectors(data, relocs, params.relocation_count, offset);
offset += SliceVectors(data, reloc_shifts, params.relocation_count, offset);
offset += SliceVectors(data, syncpt_increments, params.syncpoint_count, offset);
offset += SliceVectors(data, 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.IncrementSyncpointMaxExt(syncpt_incr.id, syncpt_incr.increments);
}
}
for (const auto& cmd_buffer : command_buffers) {
const auto object = nvmap.GetHandle(cmd_buffer.memory_id);
ASSERT_OR_EXECUTE(object, return NvResult::InvalidState;);
Tegra::ChCommandHeaderList cmdlist(cmd_buffer.word_count);
system.ApplicationMemory().ReadBlock(object->address + cmd_buffer.offset, cmdlist.data(),
cmdlist.size() * sizeof(u32));
gpu.PushCommandBuffer(core.Host1xDeviceFile().fd_to_id[fd], cmdlist);
}
// Some games expect command_buffers to be written back
offset = 0;
offset += WriteVectors(data, command_buffers, offset);
offset += WriteVectors(data, relocs, offset);
offset += WriteVectors(data, reloc_shifts, offset);
offset += WriteVectors(data, syncpt_increments, offset);
offset += WriteVectors(data, fence_thresholds, offset);
return NvResult::Success;
}
NvResult nvhost_nvdec_common::GetSyncpoint(IoctlGetSyncpoint& params) {
LOG_DEBUG(Service_NVDRV, "called GetSyncpoint, id={}", params.param);
params.value = channel_syncpoint;
return NvResult::Success;
}
NvResult nvhost_nvdec_common::GetWaitbase(IoctlGetWaitbase& params) {
LOG_CRITICAL(Service_NVDRV, "called WAITBASE");
params.value = 0; // Seems to be hard coded at 0
return NvResult::Success;
}
NvResult nvhost_nvdec_common::MapBuffer(IoctlMapBuffer& params, std::span<MapBufferEntry> entries) {
const size_t num_entries = std::min(params.num_entries, static_cast<u32>(entries.size()));
for (size_t i = 0; i < num_entries; i++) {
entries[i].map_address = nvmap.PinHandle(entries[i].map_handle);
}
return NvResult::Success;
}
NvResult nvhost_nvdec_common::UnmapBuffer(IoctlMapBuffer& params,
std::span<MapBufferEntry> entries) {
const size_t num_entries = std::min(params.num_entries, static_cast<u32>(entries.size()));
for (size_t i = 0; i < num_entries; i++) {
nvmap.UnpinHandle(entries[i].map_handle);
entries[i] = {};
}
params = {};
return NvResult::Success;
}
NvResult nvhost_nvdec_common::SetSubmitTimeout(u32 timeout) {
LOG_WARNING(Service_NVDRV, "(STUBBED) called");
return NvResult::Success;
}
Kernel::KEvent* nvhost_nvdec_common::QueryEvent(u32 event_id) {
LOG_CRITICAL(Service_NVDRV, "Unknown HOSTX1 Event {}", event_id);
return nullptr;
}
} // namespace Service::Nvidia::Devices
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