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The Interlaken is a narrow, high speed channelized chip-to-chip interface. To facilitate interoperability between a data path device and a look-aside co-processor, the Interlaken Look-Aside protocol is defined for short transaction-related transfers. Although based on the Interlaken protocol, Interlaken Look-Aside is not directly compatible with Interlaken and can be considered a different operation mode. The Interlaken LA controller connects internal platform to Interlaken serial interface. It accepts LA command through software portals, which are system memory mapped 4KB spaces. The LA commands are then translated into the Interlaken control words and data words, which are sent on TX side to TCAM through SerDes lanes. Signed-off-by: Joe Liccese <joe.liccese@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
310 lines
8.6 KiB
Plaintext
310 lines
8.6 KiB
Plaintext
===============================================================================
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Freescale Interlaken Look-Aside Controller Device Bindings
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Copyright 2012 Freescale Semiconductor Inc.
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CONTENTS
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- Interlaken Look-Aside Controller (LAC) Node
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- Example LAC Node
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- Interlaken Look-Aside Controller (LAC) Software Portal Node
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- Interlaken Look-Aside Controller (LAC) Software Portal Child Nodes
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- Example LAC SWP Node with Child Nodes
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==============================================================================
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Interlaken Look-Aside Controller (LAC) Node
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DESCRIPTION
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The Interlaken is a narrow, high speed channelized chip-to-chip interface. To
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facilitate interoperability between a data path device and a look-aside
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co-processor, the Interlaken Look-Aside protocol is defined for short
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transaction-related transfers. Although based on the Interlaken protocol,
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Interlaken Look-Aside is not directly compatible with Interlaken and can be
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considered a different operation mode.
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The Interlaken LA controller connects internal platform to Interlaken serial
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interface. It accepts LA command through software portals, which are system
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memory mapped 4KB spaces. The LA commands are then translated into the
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Interlaken control words and data words, which are sent on TX side to TCAM
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through SerDes lanes.
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There are two 4KiB spaces defined within the LAC global register memory map.
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There is a full register set at 0x0000-0x0FFF (also known as the "hypervisor"
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version), and a subset at 0x1000-0x1FFF. The former is a superset of the
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latter, and includes certain registers that should not be accessible to
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partitioned software. Separate nodes are used for each region, with a phandle
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linking the hypervisor node to the normal operating node.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac". This represents only
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those LAC CCSR registers not protected in partitioned
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software. The version of the device is determined by the LAC
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IP Block Revision Register (IPBRR0) at offset 0x0BF8.
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Table of correspondences between IPBRR0 values and example
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chips:
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Value Device
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----------- -------
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0x02000100 T4240
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The Hypervisor node has a different compatible. It must include
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"fsl,interlaken-lac-hv". This node represents the protected
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LAC register space and is required except inside a partition
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where access to the hypervisor node is to be denied.
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- fsl,non-hv-node
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Usage: required in "fsl,interlaken-lac-hv"
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Value type: <phandle>
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Definition: Points to the non-protected LAC CCSR mapped register space
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node.
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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: A standard property. The first resource represents the
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Interlaken LAC configuration registers.
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- interrupts:
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Usage: required in non-hv node only
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Value type: <prop-encoded-array>
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Definition: Interrupt mapping for Interlaken LAC error IRQ.
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EXAMPLE
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lac: lac@229000 {
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compatible = "fsl,interlaken-lac"
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reg = <0x229000 0x1000>;
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interrupts = <16 2 1 18>;
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};
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lac-hv@228000 {
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compatible = "fsl,interlaken-lac-hv"
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reg = <0x228000 0x1000>;
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fsl,non-hv-node = <&lac>;
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};
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===============================================================================
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Interlaken Look-Aside Controller (LAC) Software Portal Container Node
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DESCRIPTION
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The Interlaken Look-Aside Controller (LAC) utilizes Software Portals to accept
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Interlaken Look-Aside (ILA) commands. The Interlaken LAC software portal
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memory map occupies 128KB of memory space. The software portal memory space is
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intended to be cache-enabled. WIMG for each software space is required to be
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0010 if stashing is enabled; otherwise, WIMG can be 0000 or 0010.
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PROPERTIES
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- #address-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Must have a value of 1.
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- #size-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Must have a value of 1.
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac-portals"
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- ranges
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the address and length
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of the LAC portal memory space.
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===============================================================================
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Interlaken Look-Aside Controller (LAC) Software Portals Child Nodes
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DESCRIPTION
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There are up to 24 available software portals with each software portal
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requiring 4KB of consecutive memory within the software portal memory mapped
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space.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac-portal-vX.Y" where X is
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the Major version (IP_MJ) found in the LAC IP Block Revision
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Register (IPBRR0), at offset 0x0BF8, and Y is the Minor version
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(IP_MN).
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Table of correspondences between version values and example chips:
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Value Device
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------ -------
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1.0 T4240
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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: A standard property. The first resource represents the
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Interlaken LAC software portal registers.
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- fsl,liodn
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Value type: <u32>
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Definition: The logical I/O device number (LIODN) for this device. The
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LIODN is a number expressed by this device and used to perform
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look-ups in the IOMMU (PAMU) address table when performing
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DMAs. This property is automatically added by u-boot.
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===============================================================================
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EXAMPLE
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lac-portals {
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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compatible = "fsl,interlaken-lac-portals";
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ranges = <0x0 0xf 0xf4400000 0x20000>;
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lportal0: lac-portal@0 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x204>;
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reg = <0x0 0x1000>;
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};
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lportal1: lac-portal@1000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x205>;
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reg = <0x1000 0x1000>;
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};
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lportal2: lac-portal@2000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x206>;
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reg = <0x2000 0x1000>;
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};
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lportal3: lac-portal@3000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x207>;
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reg = <0x3000 0x1000>;
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};
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lportal4: lac-portal@4000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x208>;
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reg = <0x4000 0x1000>;
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};
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lportal5: lac-portal@5000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x209>;
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reg = <0x5000 0x1000>;
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};
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lportal6: lac-portal@6000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20A>;
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reg = <0x6000 0x1000>;
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};
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lportal7: lac-portal@7000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20B>;
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reg = <0x7000 0x1000>;
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};
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lportal8: lac-portal@8000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20C>;
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reg = <0x8000 0x1000>;
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};
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lportal9: lac-portal@9000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20D>;
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reg = <0x9000 0x1000>;
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};
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lportal10: lac-portal@A000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20E>;
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reg = <0xA000 0x1000>;
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};
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lportal11: lac-portal@B000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20F>;
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reg = <0xB000 0x1000>;
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};
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lportal12: lac-portal@C000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x210>;
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reg = <0xC000 0x1000>;
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};
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lportal13: lac-portal@D000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x211>;
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reg = <0xD000 0x1000>;
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};
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lportal14: lac-portal@E000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x212>;
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reg = <0xE000 0x1000>;
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};
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lportal15: lac-portal@F000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x213>;
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reg = <0xF000 0x1000>;
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};
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lportal16: lac-portal@10000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x214>;
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reg = <0x10000 0x1000>;
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};
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lportal17: lac-portal@11000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x215>;
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reg = <0x11000 0x1000>;
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};
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lportal8: lac-portal@1200 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x216>;
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reg = <0x12000 0x1000>;
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};
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lportal19: lac-portal@13000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x217>;
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reg = <0x13000 0x1000>;
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};
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lportal20: lac-portal@14000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x218>;
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reg = <0x14000 0x1000>;
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};
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lportal21: lac-portal@15000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x219>;
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reg = <0x15000 0x1000>;
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};
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lportal22: lac-portal@16000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x21A>;
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reg = <0x16000 0x1000>;
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};
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lportal23: lac-portal@17000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x21B>;
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reg = <0x17000 0x1000>;
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};
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};
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