mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 04:47:35 +00:00
Kernel: Rename VirtIOGPU/VirtIOGPU.cpp to VirtIOGPU/GPU.cpp
This commit is contained in:
Sahan Fernando
Ali Mohammad Pur
parent
1c77f80676
commit
4dddc56ad9
7 changed files with 6 additions and 6 deletions
273
Kernel/Graphics/VirtIOGPU/GPU.cpp
Normal file
273
Kernel/Graphics/VirtIOGPU/GPU.cpp
Normal file
|
|
@ -0,0 +1,273 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <Kernel/Graphics/VirtIOGPU/FrameBufferDevice.h>
|
||||
#include <Kernel/Graphics/VirtIOGPU/GPU.h>
|
||||
#include <Kernel/Graphics/VirtIOGPU/Console.h>
|
||||
|
||||
#define DEVICE_EVENTS_READ 0x0
|
||||
#define DEVICE_EVENTS_CLEAR 0x4
|
||||
#define DEVICE_NUM_SCANOUTS 0x8
|
||||
|
||||
namespace Kernel::Graphics::VirtIOGPU {
|
||||
|
||||
GPU::GPU(PCI::Address address)
|
||||
: VirtIODevice(address, "GPU")
|
||||
, m_scratch_space(MM.allocate_contiguous_kernel_region(32 * PAGE_SIZE, "VirtGPU Scratch Space", Region::Access::Read | Region::Access::Write))
|
||||
{
|
||||
VERIFY(!!m_scratch_space);
|
||||
if (auto cfg = get_config(ConfigurationType::Device)) {
|
||||
m_device_configuration = cfg;
|
||||
bool success = negotiate_features([&](u64 supported_features) {
|
||||
u64 negotiated = 0;
|
||||
if (is_feature_set(supported_features, VIRTIO_GPU_F_VIRGL))
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: VIRGL is not yet supported!");
|
||||
if (is_feature_set(supported_features, VIRTIO_GPU_F_EDID))
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: EDID is not yet supported!");
|
||||
return negotiated;
|
||||
});
|
||||
if (success) {
|
||||
read_config_atomic([&]() {
|
||||
m_num_scanouts = config_read32(*cfg, DEVICE_NUM_SCANOUTS);
|
||||
});
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: num_scanouts: {}", m_num_scanouts);
|
||||
success = setup_queues(2); // CONTROLQ + CURSORQ
|
||||
}
|
||||
VERIFY(success);
|
||||
finish_init();
|
||||
MutexLocker locker(m_operation_lock);
|
||||
// Get display information using VIRTIO_GPU_CMD_GET_DISPLAY_INFO
|
||||
query_display_information();
|
||||
} else {
|
||||
VERIFY_NOT_REACHED();
|
||||
}
|
||||
}
|
||||
|
||||
GPU::~GPU()
|
||||
{
|
||||
}
|
||||
|
||||
void GPU::create_framebuffer_devices()
|
||||
{
|
||||
for (size_t i = 0; i < min(m_num_scanouts, VIRTIO_GPU_MAX_SCANOUTS); i++) {
|
||||
auto& scanout = m_scanouts[i];
|
||||
scanout.framebuffer = adopt_ref(*new VirtIOGPU::FrameBufferDevice(*this, i));
|
||||
scanout.console = Kernel::Graphics::VirtIOGPU::Console::initialize(scanout.framebuffer);
|
||||
}
|
||||
}
|
||||
|
||||
bool GPU::handle_device_config_change()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
void GPU::handle_queue_update(u16 queue_index)
|
||||
{
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: Handle queue update");
|
||||
VERIFY(queue_index == CONTROLQ);
|
||||
|
||||
auto& queue = get_queue(CONTROLQ);
|
||||
ScopedSpinLock queue_lock(queue.lock());
|
||||
queue.discard_used_buffers();
|
||||
m_outstanding_request.wake_all();
|
||||
}
|
||||
|
||||
u32 GPU::get_pending_events()
|
||||
{
|
||||
return config_read32(*m_device_configuration, DEVICE_EVENTS_READ);
|
||||
}
|
||||
|
||||
void GPU::clear_pending_events(u32 event_bitmask)
|
||||
{
|
||||
config_write32(*m_device_configuration, DEVICE_EVENTS_CLEAR, event_bitmask);
|
||||
}
|
||||
|
||||
void GPU::query_display_information()
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::ControlHeader*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::DisplayInfoResponse*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request, Protocol::CommandType::VIRTIO_GPU_CMD_GET_DISPLAY_INFO, VIRTIO_GPU_FLAG_FENCE);
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
for (size_t i = 0; i < VIRTIO_GPU_MAX_SCANOUTS; ++i) {
|
||||
auto& scanout = m_scanouts[i].display_info;
|
||||
scanout = response.scanout_modes[i];
|
||||
dbgln_if(VIRTIO_DEBUG, "Scanout {}: enabled: {} x: {}, y: {}, width: {}, height: {}", i, !!scanout.enabled, scanout.rect.x, scanout.rect.y, scanout.rect.width, scanout.rect.height);
|
||||
if (scanout.enabled && !m_default_scanout.has_value())
|
||||
m_default_scanout = i;
|
||||
}
|
||||
VERIFY(m_default_scanout.has_value());
|
||||
}
|
||||
|
||||
ResourceID GPU::create_2d_resource(Protocol::Rect rect)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::ResourceCreate2D*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_RESOURCE_CREATE_2D, VIRTIO_GPU_FLAG_FENCE);
|
||||
|
||||
auto resource_id = allocate_resource_id();
|
||||
request.resource_id = resource_id.value();
|
||||
request.width = rect.width;
|
||||
request.height = rect.height;
|
||||
request.format = static_cast<u32>(Protocol::TextureFormat::VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM);
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: Allocated 2d resource with id {}", resource_id.value());
|
||||
return resource_id;
|
||||
}
|
||||
|
||||
void GPU::ensure_backing_storage(Region const& region, size_t buffer_offset, size_t buffer_length, ResourceID resource_id)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
|
||||
VERIFY(buffer_offset % PAGE_SIZE == 0);
|
||||
VERIFY(buffer_length % PAGE_SIZE == 0);
|
||||
auto first_page_index = buffer_offset / PAGE_SIZE;
|
||||
size_t num_mem_regions = buffer_length / PAGE_SIZE;
|
||||
|
||||
// Send request
|
||||
auto& request = *reinterpret_cast<Protocol::ResourceAttachBacking*>(m_scratch_space->vaddr().as_ptr());
|
||||
const size_t header_block_size = sizeof(request) + num_mem_regions * sizeof(Protocol::MemoryEntry);
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(header_block_size).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.resource_id = resource_id.value();
|
||||
request.num_entries = num_mem_regions;
|
||||
for (size_t i = 0; i < num_mem_regions; ++i) {
|
||||
request.entries[i].address = region.physical_page(first_page_index + i)->paddr().get();
|
||||
request.entries[i].length = PAGE_SIZE;
|
||||
}
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), header_block_size, sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: Allocated backing storage");
|
||||
}
|
||||
|
||||
void GPU::detach_backing_storage(ResourceID resource_id)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::ResourceDetachBacking*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.resource_id = resource_id.value();
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: Detached backing storage");
|
||||
}
|
||||
|
||||
void GPU::set_scanout_resource(ScanoutID scanout, ResourceID resource_id, Protocol::Rect rect)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::SetScanOut*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_SET_SCANOUT, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.resource_id = resource_id.value();
|
||||
request.scanout_id = scanout.value();
|
||||
request.rect = rect;
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
dbgln_if(VIRTIO_DEBUG, "GPU: Set backing scanout");
|
||||
}
|
||||
|
||||
void GPU::transfer_framebuffer_data_to_host(ScanoutID scanout, Protocol::Rect const& dirty_rect, ResourceID resource_id)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::TransferToHost2D*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.offset = (dirty_rect.x + (dirty_rect.y * m_scanouts[scanout.value()].display_info.rect.width)) * sizeof(u32);
|
||||
request.resource_id = resource_id.value();
|
||||
request.rect = dirty_rect;
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
}
|
||||
|
||||
void GPU::flush_displayed_image(Protocol::Rect const& dirty_rect, ResourceID resource_id)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::ResourceFlush*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_RESOURCE_FLUSH, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.resource_id = resource_id.value();
|
||||
request.rect = dirty_rect;
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
}
|
||||
|
||||
void GPU::synchronous_virtio_gpu_command(PhysicalAddress buffer_start, size_t request_size, size_t response_size)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
VERIFY(m_outstanding_request.is_empty());
|
||||
auto& queue = get_queue(CONTROLQ);
|
||||
{
|
||||
ScopedSpinLock lock(queue.lock());
|
||||
VirtIOQueueChain chain { queue };
|
||||
chain.add_buffer_to_chain(buffer_start, request_size, BufferType::DeviceReadable);
|
||||
chain.add_buffer_to_chain(buffer_start.offset(request_size), response_size, BufferType::DeviceWritable);
|
||||
supply_chain_and_notify(CONTROLQ, chain);
|
||||
full_memory_barrier();
|
||||
}
|
||||
m_outstanding_request.wait_forever();
|
||||
}
|
||||
|
||||
void GPU::populate_virtio_gpu_request_header(Protocol::ControlHeader& header, Protocol::CommandType ctrl_type, u32 flags)
|
||||
{
|
||||
header.type = static_cast<u32>(ctrl_type);
|
||||
header.flags = flags;
|
||||
header.fence_id = 0;
|
||||
header.context_id = 0;
|
||||
header.padding = 0;
|
||||
}
|
||||
|
||||
void GPU::flush_dirty_window(ScanoutID scanout, Protocol::Rect const& dirty_rect, ResourceID resource_id)
|
||||
{
|
||||
MutexLocker locker(m_operation_lock);
|
||||
transfer_framebuffer_data_to_host(scanout, dirty_rect, resource_id);
|
||||
flush_displayed_image(dirty_rect, resource_id);
|
||||
}
|
||||
|
||||
ResourceID GPU::allocate_resource_id()
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
m_resource_id_counter = m_resource_id_counter.value() + 1;
|
||||
return m_resource_id_counter;
|
||||
}
|
||||
|
||||
void GPU::delete_resource(ResourceID resource_id)
|
||||
{
|
||||
VERIFY(m_operation_lock.is_locked());
|
||||
auto& request = *reinterpret_cast<Protocol::ResourceUnref*>(m_scratch_space->vaddr().as_ptr());
|
||||
auto& response = *reinterpret_cast<Protocol::ControlHeader*>((m_scratch_space->vaddr().offset(sizeof(request)).as_ptr()));
|
||||
|
||||
populate_virtio_gpu_request_header(request.header, Protocol::CommandType::VIRTIO_GPU_CMD_RESOURCE_UNREF, VIRTIO_GPU_FLAG_FENCE);
|
||||
request.resource_id = resource_id.value();
|
||||
|
||||
synchronous_virtio_gpu_command(start_of_scratch_space(), sizeof(request), sizeof(response));
|
||||
|
||||
VERIFY(response.type == static_cast<u32>(Protocol::CommandType::VIRTIO_GPU_RESP_OK_NODATA));
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue