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Kernel/NVMe: Add initial NVMe driver support

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Add a basic NVMe driver support to serenity
based on NVMe spec 1.4.

The driver can support multiple NVMe drives (subsystems).
But in a NVMe drive, the driver can support one controller
with multiple namespaces.

Each core will get a separate NVMe Queue.
As the system lacks MSI support, PIN based interrupts are
used for IO.

Tested the NVMe support by replacing IDE driver
with the NVMe driver :^)
This commit is contained in:
Pankaj Raghav 2021-12-16 20:37:54 +05:30 • committed by Andreas Kling
parent 602b35aa62
commit e99fafb683
13 changed files with 946 additions and 0 deletions
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12
Kernel/Storage/StorageManagement.cpp
View file

@ -15,6 +15,7 @@
#include <Kernel/Panic.h>
#include <Kernel/Storage/ATA/AHCIController.h>
#include <Kernel/Storage/ATA/IDEController.h>
#include <Kernel/Storage/NVMe/NVMeController.h>
#include <Kernel/Storage/Partition/EBRPartitionTable.h>
#include <Kernel/Storage/Partition/GUIDPartitionTable.h>
#include <Kernel/Storage/Partition/MBRPartitionTable.h>
@ -61,6 +62,17 @@ UNMAP_AFTER_INIT void StorageManagement::enumerate_controllers(bool force_pio)
m_controllers.append(AHCIController::initialize(device_identifier));
}
});
PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) {
if (device_identifier.class_code().value() == to_underlying(PCI::ClassID::MassStorage)
&& device_identifier.subclass_code().value() == to_underlying(PCI::MassStorage::SubclassID::NVMeController)) {
auto controller = NVMeController::try_initialize(device_identifier);
if (controller.is_error()) {
dmesgln("Unable to initialize NVMe controller");
} else {
m_controllers.append(controller.release_value());
}
}
});
}
m_controllers.append(RamdiskController::initialize());
}