Introduction
This page provides details related to the standalone emacps driver.This driver supports GEM on Zynq and Zynq Ultrascale+ MPSoC
How to enable
emacps driver can be found athttps://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/emacps
The driver structure is as follows:
emacps
|
- doc - Provides the API and data structure details
|
- examples - Reference application to show how to use the driver.
|
- src - Driver source files
Features supported
Controller/Driver features supported
- 10/100/1000 speeds, phy/external loop back (supported in emacps
- PHY management
- DMA, Packet buffer support, Checksum offload, FCS stripping, programmable IPG, multicasting, promiscuous and broadcast modes.
- Flow control and half duplex features are supported by controller but not demonstrated in the examples.
- ZynqMP only: 64 bit descriptor support, Priority queue support, Jumbo frame support, CCI support
PHY configurations
emacps driver supports the following PHY configurations:
| Family | PHY | Support |
|---|---|---|
| Zynq | RGMII | Yes - supported in HW and driver |
| ZynqMP | RGMII | Yes - supported in HW and driver |
| ZynqMP | SGMII | Yes - supported in HW and driver |
Features not supported
- External FIFO interface - this driver only targets DMA
- Partial store and forward not supported
Interop
- PHY device Marvell 88E1116 has been tested on Zynq evaluation board
- PHY devices Marvell 88E1512, TI DP83867 (RGMII and SGMII), VSC8211 and RTL8211 have been tested on ZynqMP.
Performance
Standalone ethernet performance is benchmarked with the use of light weight IP library and application. Please refer to
http://www.wiki.xilinx.com/Standalone+LWIP+library#Performance
Test cases
Emacps example
Emacps basic DMA loopbakc example can be tested by selecting xemacps_intr_dma.c, xemacps_example_util.c and xemacps_example.h from the driver.
Refer to https://github.com/Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/emacps/examples/xemacps_example_readme.txt for more information.
Run fsbl and then the application elf.
Expected output is
Entering into main() Success in examples
Known Issues/Limitations
None
Change log
2020.2
Summary:
- Removed deprecated Zynq IEEE1588 example.
- Updated parallel makefile execution
Commits:
https://github.com/Xilinx/embeddedsw/commits/xilinx-v2020.2/XilinxProcessorIPLib/drivers/emacps
2020.1
Summary:
- Baremetal clocking support.
Commits:
https://github.com/Xilinx/embeddedsw/commits/xilinx-v2020.1/XilinxProcessorIPLib/drivers/emacps
2019.2
Summary:
- Minor enhancements. Bug fix in clearing status register.
Commits:
https://github.com/Xilinx/embeddedsw/commits/xilinx-v2019.2/XilinxProcessorIPLib/drivers/emacps
bc126d5 emapcs: Clear status registers properly in reset
761c9af Fixed trivial typos reported by codespell utility
e5bfe9c emacps: Remove peripheral test app support
4ac1709 emacps: Move common variable definition to _util example file
2019.1
Summary:
- Minor enhancements
- Bugfixes
Commits:
https://github.com/Xilinx/embeddedsw/commits/xilinx-v2019.1/XilinxProcessorIPLib/drivers/emacps
6a7d6b2 emacps: Add provision to set RX watermark register
d4f92e6 emacps: Use selected speed in loopback mode
625c97b emacps: Fix BD space handling in examples
de0a89f emacps: Fix pointer cast warnings in examples
53a68ac emacps: Add support for psv_ethernet IP name
f626344 emacps: Fix data alignment for IAR compiler in example
7477196 emacps: Update example to use PSV_ suffix
2018.3
Summary:
- Cleanup and fixes for GCC and coverity warnings
- Support for 64 bit addressing on Microblaze
Commits:
07c73dd emacps: Fix GCC warnings and add an additional canonical property
40d00e8 emacps: Fix coverity warnings
6ea92b1 emacps: Fix unused variable warning in example
05be3ac emacps: Remove duplicate definition of XEmacPs_BdSetLength
5b51039 emacps: Fix PTP interrupt masks and cleanup stale comments
848ceb0 emacps: Fix warning for redefining interrupt number
b87f96d drivers: Support 64 bit DMA addresses for Microblaze-X
2018.2
No changes
2018.1
6f4d0c9 emacps: Export TSU clock frequency to xparameters.h
2017.4
baf6acc emacps: Export PL PCS PMA information for ETH1/2/3
2017.3
cee2171 emacps: Export CCI enablement information
e0f9615 emacps: Update examples for CCI
2017.2
No changes
2017.1
56fc262 emacps: Modify tcl to detect Xilinx PCS PMA without PHY address - This patch adds support for use of PL PCS/PMA with ZynqMP GEM and also supports latest PL PCS/PMA IP.
2449879 emacps: Fixed compilation warnings
5322e65 emacps : Modified xil_printf statement in examples
2016.4
No changes
2016.3
commit: Fix the IEEE1588 example for Zynq
commit: Use sleep routine where delay is needed to avoid issues with optimization
Related Links
Baremetal Drivers and Libraries