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Kernel/Graphics: Apply DisplayConnector design on the VirtIO driver

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Liav A 2022-04-30 13:56:29 +03:00 • committed by Andreas Kling
parent 4ff6150f1b
commit c27c414ed1
13 changed files with 729 additions and 886 deletions
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38
Kernel/Graphics/VirtIOGPU/GPU3DDevice.cpp
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@ -13,15 +13,15 @@
#include <Kernel/Random.h>
#include <LibC/sys/ioctl_numbers.h>
namespace Kernel::Graphics::VirtIOGPU {
namespace Kernel {
GPU3DDevice::PerContextState::PerContextState(ContextID context_id, OwnPtr<Memory::Region> transfer_buffer_region)
VirtIOGPU3DDevice::PerContextState::PerContextState(Graphics::VirtIOGPU::ContextID context_id, OwnPtr<Memory::Region> transfer_buffer_region)
: m_context_id(context_id)
, m_transfer_buffer_region(move(transfer_buffer_region))
{
}
NonnullRefPtr<GPU3DDevice> GPU3DDevice::must_create(GraphicsAdapter& adapter)
NonnullRefPtr<VirtIOGPU3DDevice> VirtIOGPU3DDevice::must_create(VirtIOGraphicsAdapter const& adapter)
{
// Setup memory transfer region
auto region_result = MM.allocate_kernel_region(
@ -30,25 +30,25 @@ NonnullRefPtr<GPU3DDevice> GPU3DDevice::must_create(GraphicsAdapter& adapter)
Memory::Region::Access::ReadWrite,
AllocationStrategy::AllocateNow);
VERIFY(!region_result.is_error());
auto device = MUST(DeviceManagement::try_create_device<VirtIOGPU::GPU3DDevice>(adapter, region_result.release_value()));
auto device = MUST(DeviceManagement::try_create_device<VirtIOGPU3DDevice>(adapter, region_result.release_value()));
return device;
}
GPU3DDevice::GPU3DDevice(GraphicsAdapter& graphics_adapter, NonnullOwnPtr<Memory::Region> transfer_buffer_region)
VirtIOGPU3DDevice::VirtIOGPU3DDevice(VirtIOGraphicsAdapter const& graphics_adapter, NonnullOwnPtr<Memory::Region> transfer_buffer_region)
: CharacterDevice(28, 0)
, m_graphics_adapter(graphics_adapter)
, m_transfer_buffer_region(move(transfer_buffer_region))
{
m_kernel_context_id = m_graphics_adapter.create_context();
m_kernel_context_id = m_graphics_adapter->create_context();
}
void GPU3DDevice::detach(OpenFileDescription& description)
void VirtIOGPU3DDevice::detach(OpenFileDescription& description)
{
m_context_state_lookup.remove(&description);
CharacterDevice::detach(description);
}
ErrorOr<RefPtr<GPU3DDevice::PerContextState>> GPU3DDevice::get_context_for_description(OpenFileDescription& description)
ErrorOr<RefPtr<VirtIOGPU3DDevice::PerContextState>> VirtIOGPU3DDevice::get_context_for_description(OpenFileDescription& description)
{
auto res = m_context_state_lookup.get(&description);
if (!res.has_value())
@ -56,16 +56,16 @@ ErrorOr<RefPtr<GPU3DDevice::PerContextState>> GPU3DDevice::get_context_for_descr
return res.value();
}
ErrorOr<void> GPU3DDevice::ioctl(OpenFileDescription& description, unsigned request, Userspace<void*> arg)
ErrorOr<void> VirtIOGPU3DDevice::ioctl(OpenFileDescription& description, unsigned request, Userspace<void*> arg)
{
// TODO: We really should have ioctls for destroying resources as well
switch (request) {
case VIRGL_IOCTL_CREATE_CONTEXT: {
if (m_context_state_lookup.contains(&description))
return EEXIST;
MutexLocker locker(m_graphics_adapter.operation_lock());
SpinlockLocker locker(m_graphics_adapter->operation_lock());
// TODO: Delete the context if it fails to be set in m_context_state_lookup
auto context_id = m_graphics_adapter.create_context();
auto context_id = m_graphics_adapter->create_context();
RefPtr<PerContextState> per_context_state = TRY(PerContextState::try_create(context_id));
TRY(m_context_state_lookup.try_set(&description, per_context_state));
return {};
@ -92,10 +92,10 @@ ErrorOr<void> GPU3DDevice::ioctl(OpenFileDescription& description, unsigned requ
}
case VIRGL_IOCTL_SUBMIT_CMD: {
auto context_id = TRY(get_context_for_description(description))->context_id();
MutexLocker locker(m_graphics_adapter.operation_lock());
SpinlockLocker locker(m_graphics_adapter->operation_lock());
auto user_command_buffer = static_ptr_cast<VirGLCommandBuffer const*>(arg);
auto command_buffer = TRY(copy_typed_from_user(user_command_buffer));
m_graphics_adapter.submit_command_buffer(context_id, [&](Bytes buffer) {
m_graphics_adapter->submit_command_buffer(context_id, [&](Bytes buffer) {
auto num_bytes = command_buffer.num_elems * sizeof(u32);
VERIFY(num_bytes <= buffer.size());
MUST(copy_from_user(buffer.data(), command_buffer.data, num_bytes));
@ -108,8 +108,8 @@ ErrorOr<void> GPU3DDevice::ioctl(OpenFileDescription& description, unsigned requ
auto user_spec = static_ptr_cast<VirGL3DResourceSpec const*>(arg);
VirGL3DResourceSpec spec = TRY(copy_typed_from_user(user_spec));
Protocol::Resource3DSpecification const resource_spec = {
.target = static_cast<Protocol::Gallium::PipeTextureTarget>(spec.target),
Graphics::VirtIOGPU::Protocol::Resource3DSpecification const resource_spec = {
.target = static_cast<Graphics::VirtIOGPU::Protocol::Gallium::PipeTextureTarget>(spec.target),
.format = spec.format,
.bind = spec.bind,
.width = spec.width,
@ -121,10 +121,10 @@ ErrorOr<void> GPU3DDevice::ioctl(OpenFileDescription& description, unsigned requ
.flags = spec.flags,
.padding = 0,
};
MutexLocker locker(m_graphics_adapter.operation_lock());
auto resource_id = m_graphics_adapter.create_3d_resource(resource_spec).value();
m_graphics_adapter.attach_resource_to_context(resource_id, per_context_state->context_id());
m_graphics_adapter.ensure_backing_storage(resource_id, per_context_state->transfer_buffer_region(), 0, NUM_TRANSFER_REGION_PAGES * PAGE_SIZE);
SpinlockLocker locker(m_graphics_adapter->operation_lock());
auto resource_id = m_graphics_adapter->create_3d_resource(resource_spec).value();
m_graphics_adapter->attach_resource_to_context(resource_id, per_context_state->context_id());
m_graphics_adapter->ensure_backing_storage(resource_id, per_context_state->transfer_buffer_region(), 0, NUM_TRANSFER_REGION_PAGES * PAGE_SIZE);
spec.created_resource_id = resource_id;
// FIXME: We should delete the resource we just created if we fail to copy the resource id out
return copy_to_user(static_ptr_cast<VirGL3DResourceSpec*>(arg), &spec);