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/Documentation/devicetree/bindings/pci/
Dpci-iommu.txt2 relationship between PCI(e) devices and IOMMU(s).
17 Requester ID. While a given PCI device can only master through one IOMMU, a
18 root complex may split masters across a set of IOMMUs (e.g. with one IOMMU per
22 and a mechanism is required to map from a PCI device to its IOMMU and sideband
25 For generic IOMMU bindings, see
26 Documentation/devicetree/bindings/iommu/iommu.txt.
33 -------------------
35 - iommu-map: Maps a Requester ID to an IOMMU and associated IOMMU specifier
39 (rid-base,iommu,iommu-base,length).
41 Any RID r in the interval [rid-base, rid-base + length) is associated with
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Dapple,pcie.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Mark Kettenis <kettenis@openbsd.org>
22 the standard "reset-gpios" and "max-link-speed" properties appear on
34 - enum:
35 - apple,t8103-pcie
36 - apple,t8112-pcie
37 - apple,t6000-pcie
38 - const: apple,pcie
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Drcar-pci-host.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/pci/rcar-pci-host.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Renesas R-Car PCIe Host
11 - Marek Vasut <marek.vasut+renesas@gmail.com>
12 - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
15 - $ref: /schemas/pci/pci-host-bridge.yaml#
20 - const: renesas,pcie-r8a7779 # R-Car H1
21 - items:
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Dqcom,pcie-common.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
18 reg-names:
26 interrupt-names:
30 iommu-map:
38 clock-names:
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Dfsl,layerscape-pcie.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/fsl,layerscape-pcie.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Frank Li <Frank.Li@nxp.com>
16 which is used to describe the PLL settings at the time of chip-reset.
26 - enum:
27 - fsl,ls1012a-pcie
28 - fsl,ls1021a-pcie
29 - fsl,ls1028a-pcie
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Dhost-generic-pci.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/host-generic-pci.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Will Deacon <will@kernel.org>
13 Firmware-initialised PCI host controllers and PCI emulations, such as the
14 virtio-pci implementations found in kvmtool and other para-virtualised
21 Configuration Space is assumed to be memory-mapped (as opposed to being
26 For CAM, this 24-bit offset is:
41 - description:
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Dmediatek-pcie-gen3.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/mediatek-pcie-gen3.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jianjun Wang <jianjun.wang@mediatek.com>
19 +-----+
21 +-----+
24 port->irq
26 +-+-+-+-+-+-+-+-+
28 +-+-+-+-+-+-+-+-+
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Dqcom,pcie-sm8450.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sm8450.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
20 - qcom,pcie-sm8450-pcie0
21 - qcom,pcie-sm8450-pcie1
27 reg-names:
30 - const: parf # Qualcomm specific registers
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Dqcom,pcie-sa8775p.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sa8775p.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sa8775p
25 reg-names:
27 - const: parf # Qualcomm specific registers
28 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-sc8180x.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sc8180x.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sc8180x
25 reg-names:
28 - const: parf # Qualcomm specific registers
29 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-sm8350.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sm8350.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sm8350
25 reg-names:
28 - const: parf # Qualcomm specific registers
29 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-sm8150.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sm8150.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sm8150
25 reg-names:
28 - const: parf # Qualcomm specific registers
29 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-sm8550.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sm8550.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
20 - const: qcom,pcie-sm8550
21 - items:
22 - enum:
23 - qcom,pcie-sm8650
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Dqcom,pcie-sm8250.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sm8250.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sm8250
25 reg-names:
28 - const: parf # Qualcomm specific registers
29 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-sc7280.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-sc7280.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-sc7280
25 reg-names:
28 - const: parf # Qualcomm specific registers
29 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie-x1e80100.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pci/qcom,pcie-x1e80100.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <andersson@kernel.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
19 const: qcom,pcie-x1e80100
25 reg-names:
27 - const: parf # Qualcomm specific registers
28 - const: dbi # DesignWare PCIe registers
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Dqcom,pcie.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <bjorn.andersson@linaro.org>
11 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
20 - enum:
21 - qcom,pcie-apq8064
22 - qcom,pcie-apq8084
23 - qcom,pcie-ipq4019
24 - qcom,pcie-ipq6018
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/Documentation/core-api/
Ddma-api-howto.rst10 with example pseudo-code. For a concise description of the API, see
11 Documentation/core-api/dma-api.rst.
27 address is not directly useful to a driver; it must use ioremap() to map
39 supports 64-bit addresses for main memory and PCI BARs, it may use an IOMMU
40 so devices only need to use 32-bit DMA addresses.
49 +-------+ +------+ +------+
52 C +-------+ --------> B +------+ ----------> +------+ A
54 +-----+ | | | | bridge | | +--------+
55 | | | | +------+ | | | |
58 +-----+ +-------+ +------+ +------+ +--------+
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Ddma-api.rst8 of the API (and actual examples), see Documentation/core-api/dma-api-howto.rst.
11 Part II describes extensions for supporting non-consistent memory
13 non-consistent platforms (this is usually only legacy platforms) you
16 Part I - dma_API
17 ----------------
19 To get the dma_API, you must #include <linux/dma-mapping.h>. This
27 Part Ia - Using large DMA-coherent buffers
28 ------------------------------------------
76 Part Ib - Using small DMA-coherent buffers
77 ------------------------------------------
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/Documentation/devicetree/bindings/iommu/
Darm,smmu.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/iommu/arm,smmu.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Will Deacon <will@kernel.org>
11 - Robin Murphy <Robin.Murphy@arm.com>
23 pattern: "^iommu@[0-9a-f]*"
26 - description: Qcom SoCs implementing "arm,smmu-v2"
28 - enum:
29 - qcom,msm8996-smmu-v2
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/Documentation/driver-api/
Dvfio.rst2 VFIO - "Virtual Function I/O" [1]_
7 allotted. This includes x86 hardware with AMD-Vi and Intel VT-d,
9 systems such as Freescale PAMU. The VFIO driver is an IOMMU/device
11 a secure, IOMMU protected environment. In other words, this allows
12 safe [2]_, non-privileged, userspace drivers.
19 bare-metal device drivers [3]_.
22 field, also benefit from low-overhead, direct device access from
23 userspace. Examples include network adapters (often non-TCP/IP based)
27 which has no notion of IOMMU protection, limited interrupt support,
36 ---------------------------
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/Documentation/admin-guide/
Dkernel-parameters.txt16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nospcr -- disable console in ACPI SPCR table as
41 If set to vendor, prefer vendor-specific driver
72 The debug_level mask defaults to "info". See
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/Documentation/filesystems/
Dproc.rst1 .. SPDX-License-Identifier: GPL-2.0
24 1.1 Process-Specific Subdirectories
36 3 Per-Process Parameters
37 3.1 /proc/<pid>/oom_adj & /proc/<pid>/oom_score_adj - Adjust the oom-killer
39 3.2 /proc/<pid>/oom_score - Display current oom-killer score
40 3.3 /proc/<pid>/io - Display the IO accounting fields
41 3.4 /proc/<pid>/coredump_filter - Core dump filtering settings
42 3.5 /proc/<pid>/mountinfo - Information about mounts
44 3.7 /proc/<pid>/task/<tid>/children - Information about task children
45 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
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/Documentation/virt/kvm/
Dapi.rst1 .. SPDX-License-Identifier: GPL-2.0
4 The Definitive KVM (Kernel-based Virtual Machine) API Documentation
13 - System ioctls: These query and set global attributes which affect the
17 - VM ioctls: These query and set attributes that affect an entire virtual
24 - vcpu ioctls: These query and set attributes that control the operation
32 - device ioctls: These query and set attributes that control the operation
80 facility that allows backward-compatible extensions to the API to be
104 the ioctl returns -ENOTTY.
122 -----------------------
139 -----------------
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