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83b87a5ade
Create a bar_address_mask constant to mask the last 4 bits of a BAR address instead of hand coding the mask all over the kernel.
72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
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#include <Kernel/Graphics/Definitions.h>
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#include <Kernel/Graphics/GraphicsManagement.h>
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#include <Kernel/Graphics/Intel/NativeGraphicsAdapter.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel {
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static constexpr u16 supported_models[] {
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0x29c2, // Intel G35 Adapter
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};
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static bool is_supported_model(u16 device_id)
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{
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for (auto& id : supported_models) {
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if (id == device_id)
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return true;
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}
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return false;
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}
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ErrorOr<bool> IntelNativeGraphicsAdapter::probe(PCI::DeviceIdentifier const& pci_device_identifier)
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{
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return is_supported_model(pci_device_identifier.hardware_id().device_id);
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}
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ErrorOr<NonnullLockRefPtr<GenericGraphicsAdapter>> IntelNativeGraphicsAdapter::create(PCI::DeviceIdentifier const& pci_device_identifier)
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{
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auto adapter = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) IntelNativeGraphicsAdapter(pci_device_identifier)));
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TRY(adapter->initialize_adapter());
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return adapter;
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}
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ErrorOr<void> IntelNativeGraphicsAdapter::initialize_adapter()
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{
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dbgln_if(INTEL_GRAPHICS_DEBUG, "Intel Native Graphics Adapter @ {}", device_identifier().address());
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auto bar0_space_size = PCI::get_BAR_space_size(device_identifier(), PCI::HeaderType0BaseRegister::BAR0);
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auto bar2_space_size = PCI::get_BAR_space_size(device_identifier(), PCI::HeaderType0BaseRegister::BAR2);
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dmesgln_pci(*this, "MMIO @ {}, space size is {:x} bytes", PhysicalAddress(PCI::get_BAR0(device_identifier())), bar0_space_size);
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dmesgln_pci(*this, "framebuffer @ {}", PhysicalAddress(PCI::get_BAR2(device_identifier())));
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using MMIORegion = IntelDisplayConnectorGroup::MMIORegion;
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MMIORegion first_region { MMIORegion::BARAssigned::BAR0, PhysicalAddress(PCI::get_BAR0(device_identifier()) & PCI::bar_address_mask), bar0_space_size };
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MMIORegion second_region { MMIORegion::BARAssigned::BAR2, PhysicalAddress(PCI::get_BAR2(device_identifier()) & PCI::bar_address_mask), bar2_space_size };
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PCI::enable_bus_mastering(device_identifier());
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PCI::enable_io_space(device_identifier());
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PCI::enable_memory_space(device_identifier());
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switch (device_identifier().hardware_id().device_id) {
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case 0x29c2:
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m_connector_group = TRY(IntelDisplayConnectorGroup::try_create({}, IntelGraphics::Generation::Gen4, first_region, second_region));
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return {};
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default:
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return Error::from_errno(ENODEV);
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}
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}
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IntelNativeGraphicsAdapter::IntelNativeGraphicsAdapter(PCI::DeviceIdentifier const& pci_device_identifier)
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: GenericGraphicsAdapter()
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, PCI::Device(const_cast<PCI::DeviceIdentifier&>(pci_device_identifier))
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{
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}
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}
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