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Kernel/NVMe: Add initial NVMe driver support
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 :^)
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#cmakedefine01 NETWORK_TASK_DEBUG
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#endif
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#ifndef NVME_DEBUG
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#cmakedefine01 NVME_DEBUG
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#endif
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#ifndef OFFD_DEBUG
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#cmakedefine01 OFFD_DEBUG
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#endif
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