Multi Channel DMA Intel® FPGA IP for PCI Express* User Guide

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ID 683821
Date 7/14/2023
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Document Table of Contents
Document Table of Contents x
1. Before You Begin 2. Introduction 3. Functional Description 4. Interface Overview 5. Parameters (H-Tile) 6. Parameters (P-Tile) (F-Tile) (R-Tile) 7. Designing with the IP Core 8. Software Programming Model 9. Registers 10. Troubleshooting/Debugging 11. Multi Channel DMA Intel FPGA IP for PCI Express User Guide Archives 12. Revision History for Multi Channel DMA Intel FPGA IP for PCI Express User Guide
1. Before You Begin x
1.1. Terms and Acronyms 1.2. Known Issues
2. Introduction x
2.1. Multi Channel DMA IP for PCI Express Features 2.2. Device Family Support 2.3. Recommended Speed Grades 2.4. Resource Utilization 2.5. Release Information
2.1. Multi Channel DMA IP for PCI Express Features x
2.1.1. Endpoint Mode 2.1.2. Root Port Mode
3. Functional Description x
3.1. Multi Channel DMA 3.2. Bursting Avalon-MM Master (BAM) 3.3. Bursting Avalon-MM Slave (BAS) 3.4. MSI Interrupt 3.5. Config Slave (CS) 3.6. Root Port Address Translation Table Enablement 3.7. Hard IP Reconfiguration Interface 3.8. Config TL Interface 3.9. Configuration Intercept Interface (EP Only) 3.10. Data Mover Only
3.1. Multi Channel DMA x
3.1.1. H2D Data Mover 3.1.2. D2H Data Mover 3.1.3. Descriptors 3.1.4. Avalon-MM PIO Master 3.1.5. Avalon-MM Write (H2D) and Read (D2H) Master 3.1.6. Avalon-ST Source (H2D) and Sink (D2H) 3.1.7. User MSI-X 3.1.8. User Functional Level Reset (FLR) 3.1.9. Control Registers
3.1.2. D2H Data Mover x
3.1.2.1. D2H Descriptor Fetch
3.1.3. Descriptors x
3.1.3.1. Support for Unaligned (or byte-aligned) Data Transfer 3.1.3.2. Metadata Support 3.1.3.3. MSI-X/Writeback
3.1.6. Avalon-ST Source (H2D) and Sink (D2H) x
3.1.6.1. Avalon-ST 1-Port Mode 3.1.6.2. Packet (File) Boundary 3.1.6.3. Metadata
3.4. MSI Interrupt x
3.4.1. Endpoint MSI Support through BAS 3.4.2. MSI Interrupt Controller
3.5. Config Slave (CS) x
3.5.1. 29 bit AVMM address format 3.5.2. 14 bit AVMM address format 3.5.3. Configuration Access Mechanism
3.10. Data Mover Only x
3.10.1. H2D Data Mover 3.10.2. D2H Data Mover 3.10.3. Application Specific Bits
3.10.1. H2D Data Mover x
3.10.1.1. H2D Descriptor Format (h2ddm_desc) 3.10.1.2. H2D Descriptor Completion Packet Format (h2ddm_desc_cmpl) 3.10.1.3. H2D Descriptor Status (h2ddm_desc_status)
3.10.2. D2H Data Mover x
3.10.2.1. D2H Descriptor Format (d2hdm_desc) 3.10.2.2. D2H Descriptor Status (d2hdm_desc_status)
4. Interface Overview x
4.1. Port List 4.2. Clocks 4.3. Resets 4.4. Multi Channel DMA 4.5. Bursting Avalon-MM Master (BAM) Interface 4.6. Bursting Avalon-MM Slave (BAS) Interface 4.7. MSI Interface 4.8. Config Slave Interface (RP only) 4.9. Hard IP Reconfiguration Interface 4.10. Config TL Interface 4.11. Configuration Intercept Interface (EP Only) 4.12. Data Mover Interface 4.13. Hard IP Status Interface
4.1. Port List x
4.1.1. Port List (H-Tile) 4.1.2. Port List (P-Tile) (F-Tile) (R-Tile)
4.2. Clocks x
4.2.1. F-Tile System PLL Reference Clock Requirements
4.4. Multi Channel DMA x
4.4.1. Avalon-MM PIO Master 4.4.2. Avalon-MM Write Master (H2D) 4.4.3. Avalon-MM Read Master (D2H) 4.4.4. Avalon-ST Source (H2D) 4.4.5. Avalon-ST Sink (D2H) 4.4.6. User Event MSI-X Interface 4.4.7. User Functional Level Reset (FLR) Interface
4.12. Data Mover Interface x
4.12.1. H2D Data Mover Interface 4.12.2. D2H Data Mover Interface
5. Parameters (H-Tile) x
5.1. IP Settings 5.2. Example Designs
5.1. IP Settings x
5.1.1. System Settings 5.1.2. MCDMA Settings 5.1.3. Device Identification Registers 5.1.4. Multifunction and SR-IOV System Settings Parameters [Endpoint Mode] 5.1.5. Configuration, Debug and Extension Options 5.1.6. PHY Characteristics 5.1.7. PCI Express / PCI Capabilities Parameters
5.1.7. PCI Express / PCI Capabilities Parameters x
5.1.7.1. Device 5.1.7.2. Link 5.1.7.3. MSI-X 5.1.7.4. Power Management 5.1.7.5. Vendor Specific Extended Capability (VSEC)
6. Parameters (P-Tile) (F-Tile) (R-Tile) x
6.1. Top-Level Settings 6.2. PCIe0 Settings 6.3. PCIe1 Settings 6.4. Example Designs
6.2. PCIe0 Settings x
6.2.1. Base Address Register 6.2.2. PCIe0 Configuration, Debug and Extension Options 6.2.3. PCIe0 Device Identification Registers 6.2.4. PCIe0 PCI Express / PCI Capabilities Parameters 6.2.5. MCDMA Settings
6.2.3. PCIe0 Device Identification Registers x
6.2.3.1. PCIe0 PF0 IDs 6.2.3.2. PCIe0 PF0 VF IDs
6.2.4. PCIe0 PCI Express / PCI Capabilities Parameters x
6.2.4.1. PCIe0 Device 6.2.4.2. PCIe0 Link 6.2.4.3. PCIe0 MSI-X 6.2.4.4. PCIe0 DEV SER 6.2.4.5. PCIe0 PRS 6.2.4.6. PCIe0 ACS Capabilities 6.2.4.7. PCIe0 ATS 6.2.4.8. PCIe0 TPH
6.2.4.6. PCIe0 ACS Capabilities x
6.2.4.6.1. PCIe0 ACS for Physical Functions 6.2.4.6.2. PCIe0 ACS for Virtual Functions
6.2.4.7. PCIe0 ATS x
6.2.4.7.1. PCIe0 ATS for Physical Functions 6.2.4.7.2. PCIe0 ATS for Virtual Functions
6.2.4.8. PCIe0 TPH x
6.2.4.8.1. PCIe0 TPH for Physical Functions 6.2.4.8.2. PCIe0 TPH for Virtual Functions
6.3. PCIe1 Settings x
6.3.1. PCIe1 Configuration, Debug and Extension Options
7. Designing with the IP Core x
7.1. Generating the IP Core 7.2. Simulating the IP Core 7.3. IP Core Generation Output - Intel® Quartus® Prime Pro Edition 7.4. Systems Integration and Implementation
7.4. Systems Integration and Implementation x
7.4.1. Required Supporting IP
8. Software Programming Model x
8.1. Multi Channel DMA IP Custom Driver 8.2. Multi Channel DMA IP DPDK Poll-Mode based Driver 8.3. Multi Channel DMA IP Kernel Mode Network Device Driver
8.1. Multi Channel DMA IP Custom Driver x
8.1.1. Architecture 8.1.2. libmqdma library details 8.1.3. Application 8.1.4. Software Flow 8.1.5. API Flow 8.1.6. libmqdma Library API List 8.1.7. Request Structures
8.1.2. libmqdma library details x
8.1.2.1. Channel Initialization 8.1.2.2. Descriptor Memory Management 8.1.2.3. Descriptor Completion Status Update
8.1.5. API Flow x
8.1.5.1. Single Descriptor Load and Submit 8.1.5.2. Multiple Descriptor Load and Submit
8.1.6. libmqdma Library API List x
8.1.6.1. ifc_api_start 8.1.6.2. ifc_mcdma_port_by_name 8.1.6.3. ifc_qdma_device_get 8.1.6.4. ifc_num_channels_get 8.1.6.5. ifc_qdma_channel_get 8.1.6.6. ifc_qdma_acquire_channels 8.1.6.7. ifc_qdma_release_all_channels 8.1.6.8. ifc_qdma_device_put 8.1.6.9. ifc_qdma_channel_put 8.1.6.10. ifc_qdma_completion_poll 8.1.6.11. ifc_qdma_request_start 8.1.6.12. ifc_qdma_request_prepare 8.1.6.13. ifc_qdma_descq_queue_batch_load 8.1.6.14. ifc_qdma_request_submit 8.1.6.15. ifc_qdma_pio_read32 8.1.6.16. ifc_qdma_pio_write32 8.1.6.17. ifc_qdma_pio_read64 8.1.6.18. ifc_qdma_pio_write64 8.1.6.19. ifc_qdma_pio_read128 8.1.6.20. ifc_qdma_pio_write128 8.1.6.21. ifc_qdma_pio_read256 8.1.6.22. ifc_qdma_pio_write256 8.1.6.23. ifc_request_malloc 8.1.6.24. ifc_request_free 8.1.6.25. ifc_app_stop 8.1.6.26. ifc_qdma_poll_init 8.1.6.27. ifc_qdma_poll_add 8.1.6.28. ifc_qdma_poll_wait 8.1.6.29. ifc_mcdma_port_by_name
8.2. Multi Channel DMA IP DPDK Poll-Mode based Driver x
8.2.1. Architecture 8.2.2. MCDMA Poll Mode Driver 8.2.3. DPDK based application 8.2.4. Request Structures 8.2.5. Software Flow 8.2.6. API Flow 8.2.7. API List
8.2.2. MCDMA Poll Mode Driver x
8.2.2.1. Completion Status Update 8.2.2.2. Metadata Support 8.2.2.3. User MSI-X
8.3. Multi Channel DMA IP Kernel Mode Network Device Driver x
8.3.1. Architecture 8.3.2. Driver Information 8.3.3. Software Flow
8.3.2. Driver Information x
8.3.2.1. Device Management 8.3.2.2. Channel Management 8.3.2.3. Descriptor Memory Management 8.3.2.4. Completions Management 8.3.2.5. ethtool support 8.3.2.6. debugfs support 8.3.2.7. SRIOV Support
8.3.3. Software Flow x
8.3.3.1. Host to Device Flow 8.3.3.2. Device to Host Flow
9. Registers x
9.1. Queue Control (QCSR) 9.2. MSI-X Memory Space 9.3. Control Register (GCSR)
10. Troubleshooting/Debugging x
10.1. Debug Toolkit
10.1. Debug Toolkit x
10.1.1. Overview 10.1.2. Enabling the Debug Toolkit 10.1.3. Launching the Debug Toolkit 10.1.4. Using the Debug Toolkit
10.1.4. Using the Debug Toolkit x
10.1.4.1. Main View 10.1.4.2. Toolkit Parameters 10.1.4.3. Channel Parameters 10.1.4.4. Eye Viewer 10.1.4.5. Link Inspector
10.1.4.4. Eye Viewer x
10.1.4.4.1. Running Eye Viewer in the P-Tile Debug Toolkit 10.1.4.4.2. Running Eye Viewer in the F-Tile Debug Toolkit
1. Before You Begin
2. Introduction
3. Functional Description
4. Interface Overview
5. Parameters (H-Tile)
6. Parameters (P-Tile) (F-Tile) (R-Tile)
7. Designing with the IP Core
8. Software Programming Model
9. Registers
10. Troubleshooting/Debugging
11. Multi Channel DMA Intel FPGA IP for PCI Express User Guide Archives
12. Revision History for Multi Channel DMA Intel FPGA IP for PCI Express User Guide

6.2.5. MCDMA Settings

Figure 35. MCDMA Settings Parameters
Table 86.  MCDMA Settings
Parameter Value Default Value Description

BAR2 Address Width

128 Bytes - 8 Bytes

4 Mbytes – 22 bits

Address width for PIO AVMM port. Default address width is 22 bits

User Mode

Multi channel DMA

Bursting Master

Bursting Slave

BAM+BAS

BAM+MCDMA

BAM+BAS+MCDMA

Data Mover Mode only

Multi channel DMA

This option allows user to configure the mode of operation for MCDMA IP. MCDMA mode has the DMA functionality. BAM and BAS offer Bursting Master and Slave AVMM capabilities without DMA functionality

Note: In R-Tile 4x4, Port 2 and 3 only support BAM, BAS and BAM+BAS user mode.

Interface type

AVMM

AVST

AVMM

User logic interface type for D2HDM and H2DDM.

Default: Avalon-MM Interface

Number of ports

1

1

Number of ports for AVMM and AVST interface is 1.

Enable User-MSIX

On / Off

Off

User MSI-X is enables user application to initiate interrupts through MCDMA, this option is available only if the user selects MCDMA mode

Enable User-FLR

On / Off

Off

User FLR, interface allows passing of FLR signals to the user side application

D2H Prefetch channels

8

16

32

64

128

256

8

Sets the D2H Prefetch channels

In the current release, the D2H Prefetch Channels parameter follows the total number of DMA channels that you select in the IP Parameter Editor up to 256 total channels. When the total number of channels selected is greater than 256, then D2H Prefetch channels are automatically fixed to 64.

Note: This parameter applicable to AVST 1 port interface only.

Maximum Descriptor Fetch

16

32

64

16

Sets the maximum descriptors that are fetched per D2H prefetch channel.

Note: This parameter is applicable to AVST 1 port interface only.

Enable Metadata

On / Off

Off

Enables Metadata

Note: This parameter is only available when the Interface Type is set to AVST.

Enable Configuration Intercept Interface

On / Off

Off

Select to enable configuration intercept interface.

Enable 10-bit tag support

On / Off

Off

This parameter is available for the following user modes: MCDMA, Bursting Slave, BAM+BAS, BAM+MCDMA and BAM+BAS+MCDMA

Note: This parameter is not supported for R-tile. 10-bit tag is set to On by the IP.

Enable address byte aligned transfer

On / Off

Off

This is the option to enable the Byte aligned address mode support needed for Kernel or DPDK drivers and DMA makes no assumption on the alignment of data w.r.t to address.

Note: This parameter is only available when the Interface Type is set to AVST.

Enable MSI Capability

On / Off

Off

Enables or disables MSI capability for BAS.

Note: This parameter is only available when User Mode is set to BAS or BAM+BAS.

Enable MSI 64-bit addressing

On / Off

Off

Enables or disables 64-bit MSI addressing.

Number of MSI Messages Requested

1

2

4

8

16

32

1

Sets the number of messages that the application can request in the multiple message capable field of the Message Control register.

Enable MSI Extended Data Capability

On / Off

Off

Enables or disables MSI extended data capability.

Export pld_warm_rst_rdy and link_req_rst_n interface to top level

On / Off

Off

Exports pld_warm_rst_rdy and link_req_rst_n interface to top level.

Table 87.  Root Port MCDMA Settings ATT Parameters
Parameter Value Default Value Description

Enable ATT

On / Off

Off

Enables ATT for BAS

ATT Table Address Width

1 - 9

3

Sets depth of ATT. Depth is equal to 2 to the power of number entered.

ATT Window Address Width

10 - 63

16

Sets the number of BAS address bits to be used directly.

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