The axi direct memory access axi dma ip core provides highbandwidth direct memory. Now i want to use the dma in a linux user mode program, i dont want to make a device driver and load it into linux. For correct work of this api you must to disable support of axi dma in kernel configurations. Designware ip solutions for amba axi dma controller. The test project is the axi4 full pixel processor peripheral unit 4 or unit 7. Typical microblaze processor system configuration axi dma mm2s read microblaze processor axi interconnect ddrx memory controller p0 p1 p2 p3 sg rw s2mm write axi interconnect axi interconnect s2mm strm mm2s strm axi4stream axi4stream axi ethernet cntrl. Simple c snippet to transfer dma memory with scattergather on a zynq 7020 opendgpszynqaxidma sg. For ethernet, the control tag is 0xa in the four most. Both axi dma and axi vdma have optional scattergather support which means that instead of writing memory addresses or framebuffer addresses to control registers the dma controller grabs them from linked list in ddr memory.
Initia lization, status, and ma nagement registers are. Axi dma refers to traditional fpga direct memory access which roughly. Dma mode, dma transfer has completed and controller is. The mm2s channel supports an axi control stream for sending user application data to the target ip. The core works with northwest logic expresso cores and fpga hard cores. I am trying to use a dma engine on a zynq7000 based platform to transfer a pcm stream to a custom i2s controller in the zynq pl. Axi pcie bridge in the pci express controller on the mpsoc and connects to the linux pci subsystem for enumeration. We dont actually need those, those are used in ethernet applications, so were going to disable them. Building zynq accelerators with vivado hls, fpl 20 tutorial. Subject to the provisions of clauses 2, 3 and 4, arm hereby gr ants to.
Ive turned this tutorial into a video here for vivado 2017. Mobiveil rapidio to axi bridge controller rab mobiveils rapidio axi bridge rio axi. I would like to perform a dma operation which transfers data from the ddr3 to the ocm using the zynq dma controller. Amba dma controller with axi memory interface dma core reference guide version 1. One of examples of transferring data between zynq7010 and kintex7.
Energy and performance exploration of accelerator coherency port using xilinx zynq mohammadsadegh sadri, christian weisy, norbert wehny, and luca benini department of electrical, electronic and information engineering dei university of bologna, italy ymicroelectronic systems design research group, university of kaiserslautern, germany. Issues b and c of this document included an axi specification version, v1. Amba axi dma controller designer user guide datasheet. A company shall be a subsidiary only for the period during which such control exists. Is there a reference manual, block diagram or similar for the adi axi dma controller and associated components that is used in the fmcomms2 reference hdl.
Pdf on jul 8, 2019, xilinx and others published axi dma v7. In this in this manual the generic term cache controller means the pl310 cache controller. This is the technical reference manual trm for the primecell dma controller pl330. If you look at the zynq tab in xps, the pl330 is the box labeled dma 8 channel, whereas your axi dma controller will be connected over the blocks along the perimeter that say axi slavemasterhigh peformanceacp slave depending on how you configure it. Corelink dma330 dma controller technical reference manual. Designware ip solutions for amba axi dma controller synopsys. These are cookies that are required for the operation of or specific functionality offered. The dma controller has a internal queue that allows to have multiple descriptors queued in hardware at the same time to allow zero. The axi direct memory access axi dma ip provides highbandwidth direct memory.
Product brief compliant with rapidio specification, revision 2. The dma 330 is a highperformance dma controller that can boost the performance and reduce the power consumption in axi systems. Electrical and computer engineering department, oakland university tutorial. The axi dma provides highbandwidth direct memory access between memory and. Well create the hardware design in vivado, then write a software application in the xilinx sdk and test it on the microzed board source code is shared on. Pcm dma engine using axidma ip on xilinx zynq based platform. Simple api for working with axi dma on zynq7000 without using driver on linux. For the s2mm channel, an axi status stream is provided for receiving user application data from the target ip. I know that first thing is to initialize axi dma channel by.
Dma channels, supporting a 1 32 interfaces, including amba axi interconnect. The ahb dma controller with master ahb5 interconnect verilog ip core dbdmacmcahb. The axi dma core register space for direct register mode is shown in table26. Amba dma controller dma330 technical reference manual. Product specification register space the axi dma core register space for scattergather mode is shown in table25. So that only leaves two ports here, which are the axi streaming status and axi streaming control ports. Allows axi dma to use a receive length field that is supplied by the s2mm target ip in the app4 field of the status packet.
Axi dma debug guide guidelines to debug issues with dma based designs introduction a direct memory access dma is an operation in which data is copied transported from one resource to another resource without the involvement of the processor. The direct memory access dma controller ip core contains 1 16 dma controller engines i. In a previous tutorial i went through how to use the axi dma engine in edk, now ill show you how to use the axi dma in vivado. Any access that is not for the tcm or the ahbp interface, is handled by the appropriate cache controller if the cache is enabled. This list of instructions is organized into what is referred to as. Optional axi control and status streams to interface to the axi ethernet ip. The core can be easily integrated and used in a wide variety of dma based systems. The axi mcdma provides highbandwidth direct memory access. The dmac provides an axi interface to perform the dma transfers and two apb interfaces that control its operation.
Like this option dma engine support must be without asteriks. Here can be found documentations of all the available adi ip cores. I need to understand how the dma controller is triggered, how and when the irq line is set, etc. Corelink dma 330 dma controller technical reference manual. It allows additional bus masters to read or write system memory independently of the cpus.
When the dma manager thread accesses the axi master interface, the dmac signals the axi identification tag to be the same number as the number of dma channels that the dmac provides. Number of lines in the instruction cache and how many words a line contains. This is the technical reference manual trm for the pl310 cache controller. About the dmac the dmac is an advanced microcontroller bus architecture amba compliant peripheral that is developed, tested, and licensed by arm. The axi direct memory access axi dma core is a soft xilinx ip core for use with the xilinx embedded development kit edk. Product revision status the r npn identifier indicates the re vision status of the product described in this manual, where. The dbdmacmc axi is tuned as a highperformance dma engine, for large and small data block transfers. Axi dma backend core block diagram overview the northwest logic axi dma backend core provides highperformance, scattergather dma operation in a flexible fashion. Amba axi and ace protocol specification axi3, axi4, and. Is there a reference manual, block diagram or similar for the adi axi dma controller and associated components that is used in the fmcomms. All dma channel qs source, destination and corresponding status qs are managed by this driver.
Is it possible to request the same operation from the pl using one of the general purpose axi. Axi dma inserts a flag indicating the data type to the target device. This driver manages dma on the mpsocs pci express controller. This memory controller is mainly designed for interfacing the memories like. The designware axi dma controller is a highly optimized centralized axi dma ip component offering configuration of up to 8 channels for a range of applications. Technical reference manualamba dma controller dma 330. Doubleclick on axi direct memory access to bring up the axi dma gui. This amba axi compliant memory controller can be used with the latest arm processors as well. The axi dma provides a scattergather engine for offloading cpu management tasks to hardware.
The axi dma registers are memorymapped into noncacheable memory space. Its scatter gather capabilities also offload data movement tasks from the central processing unit cpu in processorbased systems. The digital blocks dbdmacmc axi is a multichannel dma controller supporting 1 16 independent data block packet stream transfers. I send data throught a counter with axi stream interface. The axi streams are connected in loopback so that after sending and receiving data via the dma the contents of the input buffer will have been transferred to the output buffer. Note that when instantiating a dma, the default maximum transaction size is 14bits i. Dma 330 awid communication protocol fd001 fd001 user guide arm dui 0333 amba axi designer user guide pl330 equivalent pl330 dma controller pl330 technical reference manual amba axi to apb bus bridge. The next thing is to write a driveruserspace program to configure the registers of the dma controller and then start it by writing yet to another registerbit. The axi dma controller also provides a apb or axi lite slave interface for cpu access to control status registers. Dma controller ip core amba axi ahb dma digital blocks. The axi multichannel direct memory access axi mcdma ip provides highbandwidth direct memory access between the axi4 memory mapped and axi4stream ip interfaces. So that gets rid of them, so now i can start connecting my. The direct memory access dma controller enables the movement of blocks of data from peripheral to memory, memory to peripheral, or memory to memory without burdening the processor. The designware axi dma controller is a highly optimized centralized axi dma ip component offering configuration of up to 8 channels for a range of.
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