This page gives an overview of ipipsu driver.
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Introduction
This page gives an overview of ipipsu driver which is available as part of the Xilinx Vivado and SDK distribution.
The heterogeneous multiprocessor system uses the inter-processor interrupt (IPI) structure
to exchange short interrupt-driven messages between processors in the system. The IPI
architecture allows the passing of messages across the system without the complications of
autonomous read-write transactions and polling inefficiency.
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Driver Name | Path in Vitis | Path in Github |
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ipipsu | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/ipipsu | https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/ipipsu |
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Note: To view the sources for a particular release, use the rel-version tag in github. For example, for the 2020.1 release, the proper version of the code is: https://github.com/Xilinx/embeddedsw/tree/xilinx-v2020.1/XilinxProcessorIPLib/drivers/ipipsu |
The driver source code is organized into different folders. The table below shows the ipipsu driver source organization.
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Hello IPI! [Build: Jul 2 2021 07:11:56] Interrupt ID: 67 Message Content: W0: 0x5851F42D W1: 0x40B18CCF W2: 0x4BB5F646 W3: 0x47033129 W4: 0x30705B04 W5: 0x20FD5DB4 W6: 0x1A8B7F78 W7: 0x502959D8 Triggering IPI and Waiting for Response... ---->Enter Interrupt Handler Message Received: W0: 0x5851F42D W1: 0x40B18CCF W2: 0x4BB5F646 W3: 0x47033129 W4: 0x30705B04 W5: 0x20FD5DB4 W6: 0x1A8B7F78 W7: 0x502959D8 Sent back Inverted Message. <----Exit Interrupt Handler Received response. Message : Response W0 -> 0x5851F42D : 0xA7AE0BD2 W1 -> 0x40B18CCF : 0xBF4E7330 W2 -> 0x4BB5F646 : 0xB44A09B9 W3 -> 0x47033129 : 0xB8FCCED6 W4 -> 0x30705B04 : 0xCF8FA4FB W5 -> 0x20FD5DB4 : 0xDF02A24B W6 -> 0x1A8B7F78 : 0xE5748087 W7 -> 0x502959D8 : 0xAFD6A627 Successfully ran Ipipsu selftest Example |
Changelog
2025.1
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2025.1/doc/ChangeLog#L391
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https://github.com/Xilinx/embeddedsw/blob/xilinx_v2024.1/doc/ChangeLog#L461
2023.2
https://github.com/Xilinx/embeddedsw/blob/xilinx_v2023.2/doc/ChangeLog#L574
2023.1
https://github.com/Xilinx/embeddedsw/blob/xilinx_v2023.1/doc/ChangeLog#L98
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