155 lines
3.5 KiB
Plaintext
155 lines
3.5 KiB
Plaintext
QorIQ DPAA Queue Manager Portals Device Tree Binding
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Copyright (C) 2008 - 2014 Freescale Semiconductor Inc.
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CONTENTS
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- QMan Portal
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- QMan Pool Channel
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- Example
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QMan Portal Node
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Portals are memory mapped interfaces to QMan that allow low-latency, lock-less
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interaction by software running on processor cores, accelerators and network
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interfaces with the QMan
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PROPERTIES
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- compatible
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Usage: Required
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Value type: <stringlist>
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Definition: Must include "fsl,qman-portal-<hardware revision>"
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May include "fsl,<SoC>-qman-portal" or "fsl,qman-portal"
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- reg
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Usage: Required
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Value type: <prop-encoded-array>
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Definition: Two regions. The first is the cache-enabled region of
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the portal. The second is the cache-inhibited region of
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the portal
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- interrupts
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Usage: Required
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Value type: <prop-encoded-array>
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Definition: Standard property
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- fsl,liodn
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Usage: See pamu.txt
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Value type: <prop-encoded-array>
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Definition: Two LIODN(s). DQRR LIODN (DLIODN) and Frame LIODN
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(FLIODN)
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- fsl,iommu-parent
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Usage: See pamu.txt
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Value type: <phandle>
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Definition: PAMU property used for dynamic LIODN assignment
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For additional details about the PAMU/LIODN binding(s) see pamu.txt
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- cell-index
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Usage: Required
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Value type: <u32>
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Definition: The hardware index of the channel. This can also be
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determined by dividing any of the channel's 8 work queue
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IDs by 8
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In addition to these properties the qman-portals should have sub-nodes to
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represent the HW devices/portals that are connected to the software portal
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described here
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The currently supported sub-nodes are:
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* fman0
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* fman1
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* pme
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* crypto
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These subnodes should have the following properties:
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- fsl,liodn
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Usage: See pamu.txt
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Value type: <prop-encoded-array>
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Definition: PAMU property used for static LIODN assignment
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- fsl,iommu-parent
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Usage: See pamu.txt
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Value type: <phandle>
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Definition: PAMU property used for dynamic LIODN assignment
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- dev-handle
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Usage: Required
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Value type: <phandle>
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Definition: The phandle to the particular hardware device that this
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portal is connected to.
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DPAA QMan Pool Channel Nodes
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Pool Channels are defined with the following properties.
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PROPERTIES
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- compatible
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Usage: Required
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Value type: <stringlist>
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Definition: Must include "fsl,qman-pool-channel"
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May include "fsl,<SoC>-qman-pool-channel"
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- fsl,qman-channel-id
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Usage: Required
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Value type: <u32>
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Definition: The hardware index of the channel. This can also be
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determined by dividing any of the channel's 8 work queue
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IDs by 8
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EXAMPLE
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The example below shows a (P4080) QMan portals container/bus node with two portals
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qman-portals@ff4200000 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "simple-bus";
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ranges = <0 0xf 0xf4200000 0x200000>;
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qman-portal@0 {
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compatible = "fsl,qman-portal-1.2.0", "fsl,qman-portal";
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reg = <0 0x4000>, <0x100000 0x1000>;
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interrupts = <104 2 0 0>;
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fsl,liodn = <1 2>;
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fsl,qman-channel-id = <0>;
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fman0 {
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fsl,liodn = <0x21>;
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dev-handle = <&fman0>;
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};
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fman1 {
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fsl,liodn = <0xa1>;
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dev-handle = <&fman1>;
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};
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crypto {
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fsl,liodn = <0x41 0x66>;
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dev-handle = <&crypto>;
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};
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};
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qman-portal@4000 {
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compatible = "fsl,qman-portal-1.2.0", "fsl,qman-portal";
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reg = <0x4000 0x4000>, <0x101000 0x1000>;
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interrupts = <106 2 0 0>;
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fsl,liodn = <3 4>;
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cell-index = <1>;
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fman0 {
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fsl,liodn = <0x22>;
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dev-handle = <&fman0>;
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};
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fman1 {
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fsl,liodn = <0xa2>;
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dev-handle = <&fman1>;
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};
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crypto {
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fsl,liodn = <0x42 0x67>;
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dev-handle = <&crypto>;
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};
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};
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};
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