Pcm dma engine using axidma ip on xilinx zynq based platform. Keystone architecture enhanced direct memory access edma3 controller users guide literature number. It plays a significant role in increasing the speed of data transfer between memory and peripherals via a special bus called advanced microprocessor bus architecture amba flynn, 1997. Keywordsdata acquisition, pl330 dma, zynq soc, device driver. However, the frequency and random intervals at which packets arrive do not allow the system to enter a lower power state. Its driver boots ok but another driver trying to use it cant find it in the list of dma controllers. Pl330 dma 330, pl301 nic301 network interconnect, pl340 dmc340 dynamic memory controller. Keystone architecture enhanced direct memory access. The zynq7000 family of devices uses an arm pl330 dma controller which provides the. If the problem persists, please contact atlassian support and be sure to give them this code. I want to transfer data from ps to pl through dma driver running on arm corei.
I have ddr of 1gb connected to ps and qdr connected to pl. Primecell dma controller pl330, technical reference manual. What is dma direct memory access importance and working mechanism of dma controller. The xdma framework for the dma330 dma engine xilinx. To get some realworld benefit, you could put a dma controller in logic e. Pl330 is the part number for delivery, and historically we referred to system products by the pl codes. I have used the pl330 in the zynq ps to drive the dma engine. Programming arm trustzone architecture on the xilinx zynq7000. Technical documentation is available as a pdf download. Configuration for the various parameters of the dma transaction, such as source and destination burst size, burst length, protection control, etc.
The performance comparison of the dma subsystem of the zynq. The intel 8259a programmable interrupt controller handles up to eight vectored priority interrupts for the cpu. Microprocessor 8257 dma controller dma stands for direct memory access. Another may implement s3c dma api and reside in archarmplatsamsung or wherever the s3c pl080 driver is atm. Corelink dma330 dma controller technical reference manual. Uefi driver development guide for usb host controllers.
The host processor and memory are connected to a system bus, ty pically either a pci express or serial rapidio. It uses a similar but different hardware protocol for performing the dma transfers. It is designed by intel to transfer data at the fastest rate. This is the technical reference manual trm for the primecell dma controller pl330. View online or download tti pl330 instruction manual. Corelink dma330 dma controller integration manual arm dii 0193.
The change history table lists the changes made to this manual. Pdf 2007 dma controller dma 330 supplement to amba designer adr301 user guide. Dma controller contains an address unit, for generating addresses and selecting io device for transfer. Primecell dma controller pl330 technical reference. Direct memory access dma controller is an important entity of system on chip soc architecture. The pl330 is useful for tasks like feeding audio data tofrom logic. The ip is supposed to support the axi dma mode as well as the pl330 dma from the processing system and theres also the possibility of direct register access. The first will run through all the steps necessary to compile and configure an user space test case and vfio driver example, based on the dma 330 dma controller also known as pl330 dma controller. Home documentation ddi0424 a primecell dma controller pl330 technical reference manual introduction about the dmac features of the dmac primecell dma controller pl330 technical reference manual. Direct memory access dma some devices in the msp430 family support a multichannel direct memory address dma controller that can move data from one location to another, without cpu intervention. This page is intended to give more details on the xilinx drivers for linux, such as testing, how to use the drivers, known issues, etc. Primecell dma controller pl330 technical reference manual.
Dma controller dma controller 31 table 311 provides a brief summary of the related dma module registers. Technical reference manualamba dma controller dma 330. Fastmodels, since we will deal with the pl330 dma controller and the arm smmu400, a version 7. Iec61 means that programs are developed and executed with predictable behavior.
Dma direct memory access allows the network device to move packet data directly to the systems memory, reducing cpu utilization. It is programmed and controlled by two apb interfaces, one operating in the trustzone secure mode, and the other operating in the nonsecure mode. Pdf 2007 amba axi dma controller designer user guide. The arm pl330 is simply a different dma controller from the xilinx axi dma. In that case i really like this clear separation between hardware. The execution of the driver code in the guest will not involve any trap to the host for emulation, but will instead instruct directly the real hardware device. Whether the header should be in includelinuxamba or includelinux dma is however a good question for the philosophers. The 8237a multimode direct memory access dma controller is a peripheral interface circuit for microprocessor systems. Pl330 datasheet, cross reference, circuit and application notes in pdf format. Design of high speed data transfer direct memory access. The pl300 range encapsulates the networking benefits of prolojiks lighting solutions and the installation benefits of dali. I cant quite figure out how to change this driver to dma using the. Hi, i am working with diligent zybo and using petalinux 2016. Pl310 londali controller 64 addresses with psu in enclosure pl320 londali controller 2 x 64 addresses with psu in enclosure.
I want to use axi dma instead of pl330 to play sound on the zedboard. The mp3300iec is the newest member of the mpiec series. For more information please refer to the primecell documentation. Y software dma requests y independent polarity control for dreq and dack signals y available in express standard temperature range y available in 40lead cerdip and plastic packages see packaging spec, order y2369 the 8237a multimode direct memory access dma controller is a peripheral interface circuit for microprocessor systems. My i2s controller used to have a fifo built into its axilite register space, so all dma transfers went through axilite interface. Unfortunately, we do not have any pl330 dma examples to share at this time. Dma module block diagram channel 0 control channel 1 control channel x control s e l s e l y i 0 i 1 i 2 i n int pic32 cpu is ds dma global control dmacon priority interrupt controller system.
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. Keystone architecture enhanced direct memory access edma3. The driver will construct pl330 dma programs and pass control to the pl330 itself to execute the programs. It allows the device to transfer the data directly tofrom me. But i use axi dma, it appeared abnormal the device tree file is as follows. This increases the throughput of peripheral modules and also allows the cpu to remain in a lowpower mode, without needing to wake up to. Memorytomemory transfer capability is also provided. Figure 232 shows a different use of the sg dma controller core, where the core transfers data between an internal and external memory. The drivers included in the kernel tree are intended to run on arm zynq.
Dma transfers are performed by a control circuit that is part of the io device interface. Open standards ethernetip, modbustcp and others for connectivity to many peripheral devices on the market. Testing vfio platform with the pl330 dma controller on arm. This device is an amba peripheral developed by arm. Dma can be tricky especially in the kernel ezdma tries to make it easier simply readwrite support. Dma coalescing allows the nic to collect packets before it initiates a dma event. Direct memory access controller dma part 1 duration. Io devices are connected to system bus via a special interference circuit known as dma controller. Pl330 dma 330, pl301 nic301 network interconnect, pl340 dmc340 dynamic memory controller etc.
Pcm dma engine using axi dma ip on xilinx zynq based platform. Zynq7000 all programmable soc technical reference manual. Pdf pl330 32bit amba axi dma controller designer user guide dma controller pl330 technical reference manual fd001 dma 330 user guide pl330 fd001 user guide arm dui 0333 0424a pl330 dma pl330 arm dui 0333 primecell pl330. 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. Dma controller in computer architecture, advantages and. Xilinx provides a linux driver for the pl330 dma controller itself, but in order to use it in your applications you will need to write custom software. The zynq technical reference manual trm provides a good. After the controller family has been selected, the next step is to choose the right controller for the job see ber02 for a more indepth discussion on selecting a controller. The dma 330 is a highperformance dma controller that can boost the performance and reduce the. Pl330 dmac this is a direct memory access component. Im using the i2s controller from the digilents github which is actually a modified analog devices ip the codec on the board is analogs ssm2603. The controller can operate local servopack outputs.
Then it can truly take over some memcpy tasks from the cpu. The dma controller supports amba and is attached to an ahb master and apb slave. Chapter 10 dma controller direct memory access dma is one of several methods for coordinating the timing of data transfers between an inputoutput io device and the core processing unit or memory in a computer. In dma, both cpu and dma controller have access to main memory via a shared system bus having data, address. The pl330 is currently the dma controller using at the s5pc1xx arm soc. The addresses tend to be the same on intel architecturebased platforms. I confused about arm pl330 dma controller and dma ip in. Software originally written for the 8259 will operate the 8259a in all 8259 equivalent modes mcs8085, nonbuffered, edge triggered. How to transfer data fromto the i2s controller through axi dma.
Dma performance in a zynq soc based system working in a bare metal configuration. The driver will construct pl330 dma programs and pass control to the pl330. Given this is from the xilinx wiki, it would be more appropriate to post this request on the xilinx forum. Enhanced controller area network ecan enhanced controller area network ecan 21 figure 212 illustrates the general structure of the ecan module and its interaction with the dma controller and device ram. Mar 03, 2016 hi, i am unable to get axi dma to be recognized as a dma controller.
The dma controller performs the functions that would normally be carried out by the processor when accessing the main. We have done our best to make all the documentation and resources available on old versions of internet explorer, but vector image support and the layout may not be optimal. Jan 07, 2016 dma controller is eventually a coprocessor assisting the main core software with various complex use cases involving heavy data transfers. Comparison of sg dma controller core and dma controller. Aug 22, 2017 transfer data from ps to pl through dma using linux device driver. How to transfer data fromto the i2s controller through. Transfer data from ps to pl through dma using linux device. 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. Product revision status the r npn identifier indicates the re vision status of the product described in this manual, where. So, dma api driver is the frontend that makes use of the archarmcommon pl330. It is designed to improve system performance by allowing external devices to directly transfer information from the system memory.
This approach is called direct memory access, or dma. Dma is one of the faster types of synchronization mechanisms. The dmac product designator is either pl330 or dma330 and. I confused about arm pl330 dma controller and dma ip in pl.
The direct memory access dma io technique provides direct access to the memory while the microprocessor is temporarily disabled. Recent listings manufacturer directory get instant insight into any electronic component. Corresponding register tables appear after the summary, that include a detailed description of each bit. Dear community, i trying to implement linux sound device driver for diligent zybo rev. The arm pl330 should be a hard ip block, as opposed to axi dma which is syntehsized with the fpga design.
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