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8cbacc9a27
Introduce NVMe Direct I/O (HLDIO) infrastructure to support peer‑to‑peer DMA in the habanalabs driver. This adds internal helpers and data structures to enable direct transfers between NVMe storage and device memory. The feature is built only when CONFIG_HL_HLDIO is enabled. A debugfs interface is also provided for functional validation. Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com> Reviewed-by: Farah Kassabri <farah.kassabri@intel.com> Reviewed-by: Koby Elbaz <koby.elbaz@intel.com> Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
53 lines
1.4 KiB
Plaintext
53 lines
1.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# HabanaLabs AI accelerators driver
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#
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config DRM_ACCEL_HABANALABS
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tristate "HabanaLabs AI accelerators"
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depends on DRM_ACCEL
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depends on X86 && X86_64
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depends on PCI && HAS_IOMEM
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select GENERIC_ALLOCATOR
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select HWMON
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select DMA_SHARED_BUFFER
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select CRC32
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select FW_LOADER
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help
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Enables PCIe card driver for Habana's AI Processors (AIP) that are
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designed to accelerate Deep Learning inference and training workloads.
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The driver manages the PCIe devices and provides IOCTL interface for
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the user to submit workloads to the devices.
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The user-space interface is described in
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include/uapi/drm/habanalabs_accel.h
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If unsure, say N.
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To compile this driver as a module, choose M here: the
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module will be called habanalabs.
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if DRM_ACCEL_HABANALABS
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config HL_HLDIO
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bool "Habanalabs NVMe Direct I/O (HLDIO)"
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depends on PCI_P2PDMA
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depends on BLOCK
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help
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Enable NVMe peer-to-peer direct I/O support for Habanalabs AI
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accelerators.
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This allows direct data transfers between NVMe storage devices
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and Habanalabs accelerators without involving system memory,
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using PCI peer-to-peer DMA capabilities.
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Requirements:
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- CONFIG_PCI_P2PDMA=y
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- NVMe device and Habanalabs accelerator under same PCI root complex
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- IOMMU disabled or in passthrough mode
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- Hardware supporting PCI P2P DMA
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If unsure, say N
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endif # DRM_ACCEL_HABANALABS
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