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Kernel: Add support for SD host controllers on the PCI bus

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This commit is contained in:
Marco Cutecchia 2023-03-23 21:31:01 +01:00 • committed by Andrew Kaster
parent 47cae8005f
commit 5fe6c6fc24
5 changed files with 124 additions and 5 deletions
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32
Kernel/Storage/StorageManagement.cpp
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@ -28,6 +28,7 @@
#include <Kernel/Storage/ATA/AHCI/Controller.h>
#include <Kernel/Storage/ATA/GenericIDE/Controller.h>
#include <Kernel/Storage/NVMe/NVMeController.h>
#include <Kernel/Storage/SD/PCISDHostController.h>
#include <Kernel/Storage/SD/SDHostController.h>
#include <Kernel/Storage/StorageManagement.h>
#include <LibPartition/EBRPartitionTable.h>
@ -88,7 +89,6 @@ UNMAP_AFTER_INIT void StorageManagement::enumerate_pci_controllers(bool force_pi
{
VERIFY(m_controllers.is_empty());
using SubclassID = PCI::MassStorage::SubclassID;
if (!kernel_command_line().disable_physical_storage()) {
// NOTE: Search for VMD devices before actually searching for storage controllers
// because the VMD device is only a bridge to such (NVMe) controllers.
@ -100,10 +100,8 @@ UNMAP_AFTER_INIT void StorageManagement::enumerate_pci_controllers(bool force_pi
}
}));
MUST(PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) -> void {
if (device_identifier.class_code().value() != to_underlying(PCI::ClassID::MassStorage)) {
return;
}
auto const& handle_mass_storage_device = [&](PCI::DeviceIdentifier const& device_identifier) {
using SubclassID = PCI::MassStorage::SubclassID;
auto subclass_code = static_cast<SubclassID>(device_identifier.subclass_code().value());
#if ARCH(X86_64)
@ -135,6 +133,30 @@ UNMAP_AFTER_INIT void StorageManagement::enumerate_pci_controllers(bool force_pi
m_controllers.append(controller.release_value());
}
}
};
auto const& handle_base_device = [&](PCI::DeviceIdentifier const& device_identifier) {
using SubclassID = PCI::Base::SubclassID;
auto subclass_code = static_cast<SubclassID>(device_identifier.subclass_code().value());
if (subclass_code == SubclassID::SDHostController) {
auto sdhc_or_error = PCISDHostController::try_initialize(device_identifier);
if (sdhc_or_error.is_error()) {
dmesgln("PCI: Failed to initialize SD Host Controller ({} - {}): {}", device_identifier.address(), device_identifier.hardware_id(), sdhc_or_error.error());
} else {
m_controllers.append(sdhc_or_error.release_value());
}
}
};
MUST(PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) -> void {
auto class_code = device_identifier.class_code().value();
if (class_code == to_underlying(PCI::ClassID::MassStorage)) {
handle_mass_storage_device(device_identifier);
} else if (class_code == to_underlying(PCI::ClassID::Base)) {
handle_base_device(device_identifier);
}
}));
}
}