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The main change in TaPaSCo 2020.10 is the new runtime. It is completely re-engineered in Rust and comes with many improvements like better error handling and multithreading support. This change requires the rust compiler as a prerequisite (please get a recent version via https://rustup.rs/). Other changes included in the release are: * Standardized feature to connect PEs to network ports for supported platforms (VC709, ZC706, XUP-VVH, NetFPGA-SUME) * The addition of the Alveo U280 data center card as a supported card * Support for Vivado 2020.1 and CentOS 8 This release closes 12 [issues](https://github.com/esa-tu-darmstadt/tapasco/issues?q=is%3Aissue+milestone%3A2020.10+is%3Aclosed) closed in over 260 commits.
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| SFPPLUS in TaPaSCo | ||
| =================== | ||
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| A number of platforms in TaPaSCo provide the SFP+-feature which allows to send/recieve network packets. | ||
| The following will describe the general configuration format. | ||
| The information, which platforms are supported, as well as platform specific information (like the number of available SPF+ Ports), | ||
| can be found [here](tapasco-features.md). | ||
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| ## Configuration format | ||
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| The configuration format is split into two parts: | ||
| 1. The [Port Definition](#port-definition) | ||
| 2. The [Connections of PEs](#pe-connections) to ports | ||
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| ### Port Definition | ||
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| Here you can specify a list of ports. Each port has four properties: | ||
| - The name of the port: Used to reference the port when specifiying the connections | ||
| - The mode of the port: How PEs are connected to the port ([singular](#singular-mode), [roundrobin](#roundrobin-mode), [broadcast](#broadcast-mode)) | ||
| - The physical port number: Depends on the platform, see [TaPaSCo Features](tapasco-features.md) | ||
| - Where the clock synchronization should occur: Either the synchronization is done via AXI-Stream interconnects (`ic_sync: true`). | ||
| Alternatively the synchronization can be handled by the PE (`ic_sync: false`). In the latter case the PE must have a separate | ||
| clock/reset-pair for each AXI-Stream interface. | ||
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| Example: | ||
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| ``` | ||
| SFPPLUS { | ||
| "Ports": [ | ||
| { | ||
| "name": "port_A", | ||
| "mode": "singular", | ||
| "physical_port": "0", | ||
| "ic_sync": false | ||
| }, | ||
| { | ||
| "name": "port_B", | ||
| "mode": "roundrobin", | ||
| "physical_port": "1", | ||
| "ic_sync": true | ||
| } | ||
| ], | ||
| ... | ||
| } | ||
| ``` | ||
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| #### Singular Mode | ||
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| In this mode each Port can only have one sending AXIS-Interface and one recieving AXIS-Interface connected. They are directly connected to the port. | ||
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| #### Roundrobin Mode | ||
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| In this mode the packets recieved on the port are distributed to all connected AXIS-Interface round-robin: The first recieved packet is forwarded | ||
| to the first AXIS-Interface, the second packet to the second AXIS-Interface and so on... | ||
|
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| #### Broadcast Mode | ||
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| In this mode all recieved packets are forwarded to all connected AXIS-Interfaces. | ||
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| ### PE Connections | ||
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| Here you first define groups of PEs and then for each group how their AXIS-Interfaces are mapped to the ports. | ||
| A group of PE is defined by the ID of the PE-Type and a number. Each PE in your composition may only be used | ||
| in one of these groups. Each group defines mappings from their AXIS-Interfaces to ports. | ||
| A mapping consists of | ||
| - the name of the interface | ||
| - the direction: `rx` for recieving packets and `tx` for sending packets | ||
| - the port name ([see](#port-definition)) | ||
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| Example: | ||
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| ``` | ||
| SFPPLUS { | ||
| ... | ||
| "PEs": [ | ||
| { | ||
| "ID": "PE1", | ||
| "Count": "1", | ||
| "mappings": [ | ||
| { | ||
| "interface": "sfp_axis_0_rx", | ||
| "direction": "rx", | ||
| "port": "port_A" | ||
| }, | ||
| { | ||
| "interface": "sfp_axis_0_tx", | ||
| "direction": "tx", | ||
| "port": "port_A" | ||
| } | ||
| ] | ||
| }, | ||
| { | ||
| "ID": "PE2", | ||
| "Count": "4", | ||
| "mappings": [ | ||
| { | ||
| "interface": "sfp_axis_0_rx", | ||
| "direction": "rx", | ||
| "port": "port_B" | ||
| } | ||
| ] | ||
| } | ||
| ] | ||
| } | ||
| ``` |
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