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Kernel: Make Graphics device detection a bit more idomatic

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Hendiadyoin1 2023-09-11 18:28:30 +02:00 committed by Andrew Kaster
parent e7012a9245
commit d64d03e0d6
Notes: sideshowbarker 2024-07-16 23:52:22 +09:00 
Author: https://github.com/Hendiadyoin1
Commit: https://github.com/SerenityOS/serenity/commit/d64d03e0d6
Pull-request: https://github.com/SerenityOS/serenity/pull/21028
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/supercomputer7 ✅
2 changed files with 13 additions and 3 deletions
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10
Kernel/Bus/PCI/Definitions.h
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@ -93,6 +93,7 @@ static constexpr u16 msix_control_enable = 0x8000;
// Taken from https://pcisig.com/sites/default/files/files/PCI_Code-ID_r_1_11__v24_Jan_2019.pdf
enum class ClassID {
Legacy = 0x00,
MassStorage = 0x01,
Network = 0x02,
Display = 0x03,
@ -114,6 +115,14 @@ enum class ClassID {
NonEssentialInstrumentation = 0x13,
};
namespace Legacy {
enum class SubclassID {
Any = 0x00,
VGACompatible = 0x01
};
}
namespace MassStorage {
enum class SubclassID {
@ -336,6 +345,7 @@ AK_TYPEDEF_DISTINCT_ORDERED_ID(u8, ClassCode);
AK_MAKE_DISTINCT_NUMERIC_COMPARABLE_TO_ENUM(ClassCode, ClassID)
AK_TYPEDEF_DISTINCT_ORDERED_ID(u8, SubclassCode);
AK_MAKE_DISTINCT_NUMERIC_COMPARABLE_TO_ENUM(SubclassCode, Legacy::SubclassID);
AK_MAKE_DISTINCT_NUMERIC_COMPARABLE_TO_ENUM(SubclassCode, MassStorage::SubclassID);
AK_MAKE_DISTINCT_NUMERIC_COMPARABLE_TO_ENUM(SubclassCode, Network::SubclassID);
AK_MAKE_DISTINCT_NUMERIC_COMPARABLE_TO_ENUM(SubclassCode, Display::SubclassID);

6
Kernel/Devices/GPU/Management.cpp
View file

@ -110,14 +110,14 @@ static inline bool is_vga_compatible_pci_device(PCI::DeviceIdentifier const& dev
{
// Note: Check for Display Controller, VGA Compatible Controller or
// Unclassified, VGA-Compatible Unclassified Device
auto is_display_controller_vga_compatible = device_identifier.class_code().value() == 0x3 && device_identifier.subclass_code().value() == 0x0;
auto is_general_pci_vga_compatible = device_identifier.class_code().value() == 0x0 && device_identifier.subclass_code().value() == 0x1;
auto is_display_controller_vga_compatible = device_identifier.class_code() == PCI::ClassID::Display && device_identifier.subclass_code() == PCI::Display::SubclassID::VGA;
auto is_general_pci_vga_compatible = device_identifier.class_code() == PCI::ClassID::Legacy && device_identifier.subclass_code() == PCI::Legacy::SubclassID::VGACompatible;
return is_display_controller_vga_compatible || is_general_pci_vga_compatible;
}
static inline bool is_display_controller_pci_device(PCI::DeviceIdentifier const& device_identifier)
{
return device_identifier.class_code().value() == 0x3;
return device_identifier.class_code() == PCI::ClassID::Display;
}
struct PCIGraphicsDriverInitializer {